MikaStars39/nano-eval huggingface dataset:
What are the maximum off-state voltage and the maximum on-state current of Motorola MAC212-4 triac?

Options:
A. 400 V, 4A
B. 200 V, 4A
C. 200 V, 16A
D. 200 V, 12A
E. 200 V, 8A
F. 200 V, 6A
G. 400 V, 12A
H. 400 V, 8A
I. 200 V, 14A
J. 200 V, 10A
Answer: D
Company A is a well-established electrical appliance manufacturer with advantages in capital, technology, and personnel, and strong market competitiveness. The company is now preparing to produce electric irons. Through market research, the following data was obtained: the current electric iron market is still in an unsaturated state, and with the gradual improvement of people's living standards and quality of life, there is still significant growth potential in the electric iron market; new electric iron models appearing in the market have widely adopted hard plastic materials, making them more convenient to operate and longer-lasting; according to survey data, the market concentration of electric irons exceeds 60%, and this concentration is still gradually increasing. Based on the above information, for Company A, the electric iron market represents a ( ).

Options:
A. Risk-type market opportunity
B. Secure-type market opportunity with moderate growth potential
C. Secure-type market opportunity
D. Secure-type market opportunity with moderate risk
E. Ideal-type market opportunity
F. Problem-type market opportunity
G. Secure-type market opportunity with moderate risk and moderate growth potential
Answer: A
A small company producing basic construction materials has everyone, from the general manager to ordinary employees, dedicated to developing its core business. In recent years, the company has grown rapidly and expanded into furniture, cosmetics, real estate, and other fields. To coordinate and plan the development of the company's various business lines and implement sustainable effective strategies, the company has decided to establish a planning department immediately. Considering the company's history and development requirements, the best method to select the director of the planning department should be ( ).

Options:
A. Concurrent position held by current general manager
B. Identify potential candidates internally, send them for training, and appoint them upon completion of a long-term internship
C. External recruitment
D. Identify potential candidates internally, send them for training, and appoint them upon completion of a short-term project
E. Identify potential candidates internally, provide them with a short-term internship, and appoint them upon completion of the internship
F. Identify potential candidates internally, send them for training, and appoint them upon return
G. Internal selection
H. Identify potential candidates internally, provide them with a short-term internship, and appoint them upon return
Answer: F
Due to solar rotation, radiation from the initial edges (approaching and receding from the observer) shows Doppler shifts (blue and red shifts respectively), creating a coupling force effect. Calculate the relative rate of solar rotation slowdown (assuming rotating mass is 0.3M⊙).

Options:
A. $d\omega/dt = -8.2\times10^{-14}year^{-1}$
B. $d\omega/dt = -8.2\times10^{-15}year^{-1}$
C. $d\omega/dt = -8.2\times10^{-18}year^{-1}$
D. $d\omega/dt = -8.2\times10^{-16}year^{-1}$
E. $d\omega/dt = -8.2\times10^{-19}year^{-1}$
F. $d\omega/dt = -8.2\times10^{-14}year^{-2}$
G. $d\omega/dt = -8.2\times10^{-12}year^{-1}$
H. $d\omega/dt = -8.2\times10^{-13}year^{-1}$
I. $d\omega/dt = -8.2\times10^{-14}year^{-1.5}$
J. $d\omega/dt = -8.2\times10^{-17}year^{-1}$
Answer: A
Consider Earth as a spherically symmetric body consisting of two parts: a mantle with radius R and a core with radius R/2, each with uniform density, where core density is f times mantle density. If Earth's moment of inertia is 1/3 MR², what is the value of f?

Options:
A. 3.33
B. 3.29
C. 3.18
D. 3.20
E. 3.31
F. 3.14
G. 3.22
H. 3.25
I. 3.26
J. 3.27
Answer: B
If inner core entropy is constant and the core solidifies at an average temperature of 4400K, what is the total latent heat released during inner core solidification?

Options:
A. $M_{ic}L = 6.5\times10^{27.8}$ J
B. $M_{ic}L = 6.5\times10^{28}$ J
C. $M_{ic}L = 6.5\times10^{24}$ J
D. $M_{ic}L = 6.5\times10^{23}$ J
E. $M_{ic}L = 6.5\times10^{26}$ J
F. $M_{ic}L = 6.5\times10^{27.5}$ J
G. $M_{ic}L = 6.5\times10^{27}$ J
H. $M_{ic}L = 6.5\times10^{28.5}$ J
I. $M_{ic}L = 6.5\times10^{25}$ J
J. $M_{ic}L = 6.5\times10^{29}$ J
Answer: B
Climacteric fruits are fruit that ripen after harvest, such as bananas, mangoes, tomatoes, and avocados. Such fruit will ripen when exposed to ethylene, a natural ripening hormone. Other fruit, such as citrus, are not strongly climacteric, but nonetheless respond to ethylene in terms of the degreening of skin. Ripening or de-greening facilities involve the exposure of fruit to ethylene. The ethylene may be generated from the decomposition of ethephon, by bleed of gaseous ethylene from a compressed supply. Although the required treatment time is dependent on the crop and the time of season, there is a typical treatment involves 24 hours with an ethylene concentration of (µL/L). How much is the ethylene concentration?

Options:
A. 9
B. 12
C. 5
D. 15
E. 14
F. 13
G. 8
H. 20
I. 10
J. 11
Answer: I
There is an ammonia refrigeration device, t_k = 30°C, t_0 = -15°C, the overcooling degree of liquid refrigerant in front of the expansion valve is 5°C. If the conditions on the high pressure side are the same and the evaporation temperature drops to -25°C, what percentage of the cooling coefficient is reduced from the original cooling coefficient?

Options:
A. 18.4%
B. 17.6%
C. 15.4%
D. 16.6%
E. 19.6%
F. 17.4%
G. 17.8%
H. 16.8%
I. 16.2%
J. 17.2%
Answer: J
There is a cooler that cools water from 15°C to 9°C, and the refrigerant evaporates at 5°C. After long-term use, it is necessary to set the evaporation temperature to 3°C, otherwise, it can not keep the outlet water temperature 9°C, ask how much the heat transfer coefficient of the cooling tube is reduced?

Options:
A. 23.3%
B. 22.2%
C. 24.6%
D. 24.0%
E. 24.8%
F. 25.5%
G. 24.2%
H. 26.6%
I. 24.1%
J. 24.4%
Answer: J
There is a binary cascade refrigeration unit, the refrigerant in the low temperature department uses freON-13, $t_0$= -75°C, $t_k$= -25°C, and the temperature of the liquid refrigerant in front of the expansion valve is -28°C. The refrigerant in the high temperature department is freON-22, $t_0'$= -30°C, $t_k'$= 26°C, and the temperature of the liquid refrigerant in front of the expansion valve is 22°C. Given that both the low temperature and high temperature compressors are inhaling dry saturated steam, what is the refrigeration coefficient of the binary cascade refrigeration cycle?

Options:
A. 1.345
B. 1.365
C. 1.375
D. 1.245
E. 1.325
F. 1.315
G. 1.335
H. 1.395
I. 1.355
J. 1.445
Answer: A
There is a Freon-12 heat pump heating device with a cooling capacity of $3 \times 10^4 \text{kcal/h}$$, $t_k = 45°C$, $t_0 = -15°C$, and the temperature of the liquid refrigerant in front of the expansion valve is $34°C$. The refrigerant is in the state of dry saturated steam at the evaporator outlet. The compression efficiency of the compressor $\eta_s = 0.65$, the outlet liquid of the condenser is a saturated liquid, and the temperature of the liquid refrigerant in front of the expansion valve is cooled to $34°C$$by means of heat exchange with the gas inhaled by the compressor. Q How many kilowatts does the heat pump device discharge? The known mechanical efficiency of the compressor is $\eta_m = 0.92$.

Options:
A. 50.9
B. 51.9
C. 52.1
D. 51.5
E. 51.3
F. 52.3
G. 51.1
H. 51.7
I. 50.5
J. 49.7
Answer: B
If we assume a classical heat capacity of 3R and average atomic mass of 50, and $5\times10^{12}$ W of core heat is consumed in cooling, what is the average cooling rate (ignoring latent heat of solidification)?

Options:
A. $5.12\times10^{-17}$ K/s
B. $5.12\times10^{-12}$ K/s
C. $5.12\times10^{-18}$ K/s
D. $5.12\times10^{-11}$ K/s
E. $5.12\times10^{-10}$ K/s
F. $5.12\times10^{-15}$ K/s
G. $5.12\times10^{-14}$ K/s
H. $5.12\times10^{-13}$ K/s
I. $5.12\times10^{-19}$ K/s
J. $5.12\times10^{-16}$ K/s
Answer: F
An exercise room has six weight-lifting machines that have no motors and seven treadmills each equipped with a 2.5-hp (shaft output) motor. The motors operate at an average load factor of $0. 7$ , at which their efficiency is 0.77. During peak evening hours, all 13 pieces of exercising equipment are used continuously, and there are also two people doing light exercises while waiting in line for one piece of the equipment. Assuming the average rate of heat dissipation from people in an exercise room is 600 W, determine the rate of heat gain of the exercise room from people and the equipment at peak load conditions.

Options:
A. 20, 220 W
B. 11, 970 W
C. 11, 870 W
D. 20, 270 W
E. 20, 370 W
F. 20, 170 W
G. 20, 120 W
Answer: D
For geomagnetic disturbances with a period of only 1000 years, what is the electromagnetic skin depth of the Earth's core? (Since the main components of long-term variations have periods of this order of magnitude, this estimate is valuable for the thickness of core boundary layers not participating in dynamo action)

Options:
A. $z_0 = 15300$ km
B. $z_0 = 153000$ km
C. $z_0 = 1530$ km
D. $z_0 = 1530$ m
E. $z_0 = 15.3$ km
F. $z_0 = 153$ km
Answer: F
At very low temperatures, metal specific heat is mainly determined by conduction electron effects. For iron at T=4000°K and P=2 megabars, what is the electron contribution to thermal pressure?

Options:
A. $7.5\times10^{11}$ Pascal
B. $7.5\times10^9$ Pascal
C. $7.5\times10^{12}$ Pascal
D. $7.5\times10^{13}$ Pascal
E. $7.5\times10^8$ Pascal
F. $7.5\times10^{10}$ Pascal
G. $7.5\times10^7$ Pascal
Answer: B
Calculate the guarantee coefficient k and oxygen deficiency n for a pharmaceutical mixture containing 60% KClO₃ (potassium chlorate), 25% Na₂C₂O₄ (sodium oxalate), and 15% shellac.

Options:
A. 0.67,-11.4
B. 0.83,-10.8
C. 0.72,-9.5
D. 0.58,-12.3
E. 0.89,-8.2
F. 0.51,-11.9
G. 0.21,2.98
H. 0.35,0.64
I. 0.45,-13.7
J. 0.94,-7.6
Answer: A
Among the following statements, the correct ones are:
I. A flow where the flow value on each directed edge is zero is a feasible flow
II. A feasible flow has a flow value less than the capacity constraint and greater than or equal to zero
III. A feasible flow has a flow value greater than zero and less than the capacity constraint
IV. At any intermediate node in the network, a feasible flow satisfies inflow = outflow
V. In a simple graph G, if the number of edges is greater than or equal to the number of vertices, G does not necessarily contain a cycle

Options:
A. I,II,IV
B. III,IV,V
C. I,IV,V
D. II,III,IV
E. I,II,III
F. II,IV,V
G. I,II,III,IV,V
H. II,III,V
I. I,III,V
J. I,II,V
Answer: A
Six PhD students need to defend their dissertations. The defense committee members are:
A1 = (Professor Zhang, Professor Li, Professor Wang),
A2 = (Professor Li, Professor Zhao, Professor Liu),
A3 = (Professor Zhang, Professor Liu, Professor Wang),
A4 = (Professor Zhao, Professor Liu, Professor Wang),
A5 = (Professor Zhang, Professor Li, Professor Sun),
A6 = (Professor Li, Professor Liu, Professor Wang).
How many different time slots must be scheduled for these dissertation defenses?

Options:
A. 4
B. 2
C. 6
D. 5
E. 3
F. 9
G. 8
H. 1
I. 7
Answer: D
The basic logical characteristics of judgments are:
I. Expressed through statements
II. Contains ideational content
III. Can be true or false
IV. Makes an assertion
V. Can be represented by symbols

Options:
A. III,IV
B. I,V
C. II,III
D. II,V
E. I,III
F. I,II
G. I,IV
H. II,IV
I. III,V
J. IV,V
Answer: A
The common characteristics of media products as commodities include ()
I. Products of human labor
II. Unity of use value and exchange value
III. Intended for exchange
IV. Consumers have dual nature

Options:
A. I,II
B. II,III
C. III
D. I,II,III
E. II,IV
F. I,II,III,IV
G. I,IV
H. III,IV
I. IV
J. I,III
Answer: D
The attention to "robust build" in the term "robust build" involves:
I. Anatomy
II. Racial Studies
III. Physical Anthropology
IV. Linguistics

Options:
A. I
B. II,IV
C. I,III
D. I,II
E. I,IV
F. III,IV
G. II,III
H. IV
I. I,II,III
J. III
Answer: I
Consider a flat Earth model where the rate of heat generation per unit volume $q$ varies with depth as follows: $$q = \frac{Q}{Z_0} e^{-z / z_0}$$
Here, $Q$ is the equilibrium surface heat flow per unit area, and $z_0$ is the scale depth of the exponential distribution of heat sources, assumed to be much smaller than Earth's radius. When the thermal conductivity K is constant and the near-surface gradient is $(dT/dz)_0$, what is the asymptotic temperature at great depth?

Options:
A. $$T_{\mathrm{\infty}}=: T_{\mathrm{0}}+\frac{z_{0}} {Q K}$$
B. $$T_{\mathrm{\infty}}=: T_{\mathrm{0}}-\frac{Q z_{0}} {K}$$
C. $$
T_{\mathrm{\infty}}=: T_{\mathrm{0}}+\frac{Q z_{0}} {K}
$$
D. $$T_{\mathrm{\infty}}=: T_{\mathrm{0}}+\frac{K z_{0}} {Q}$$
E. $$T_{\mathrm{\infty}}=: T_{\mathrm{0}}+\frac{Q K} {z_{0}}$$
F. $$T_{\mathrm{\infty}}=: T_{\mathrm{0}}-\frac{K} {Q z_{0}}$$
G. $$T_{\mathrm{\infty}}=: T_{\mathrm{0}}+\frac{2Q z_{0}} {K}$$
H. $$T_{\mathrm{\infty}}=: T_{\mathrm{0}}+\frac{Q z_{0}} {2K}$$
I. $$T_{\mathrm{\infty}}=: T_{\mathrm{0}}+\frac{K} {Q z_{0}}$$
J. $$T_{\mathrm{\infty}}=: T_{\mathrm{0}}+\frac{Q} {K z_{0}}$$
Answer: C
A small company makes widgets in a variety of constituent materials (aluminum, copper, iron), colors (red, green, blue, grey), and finishes (matte, textured,
coated). The box below shows a typical order form for the company's widgets.
| Order Form | Material | Color | Finish |
|------------|----------|--------|-----------|
| | Aluminum | Red | Matte√ |
| | Copper√ | Green√ | Textured |
| | Iron | Blue√ | Coated√ |
| | | Grey | |
Although there are more than one thousand possible combinations of widget features, the company markets only a subset of the possible combinations. The following sentences are constraints that characterize the possibilities. Your job here is to select a truth value for each constraint indicating whether that
constraint is satisfied by the order shown above.
a. aluminum $\vee$ copper $\vee$ iron
b. aluminum $\Rightarrow$ grey
c. copper $\wedge$ $\neg$ coated $\Rightarrow$ red
d. coated $\wedge$ $\neg$ copper $\Rightarrow$ green
e. green $\vee$ blue $\Leftrightarrow$ $\neg$ textured $\wedge$ $\neg$ iron

Options:
A. True.True.True.True.False.
B. True.True.True.True.True.
C. False.True.True.False.True.
D. True.False.False.True.True.
E. False.True.True.True.True.
F. True.True.True.False.True.
G. True.True.False.False.True.
H. True.False.True.True.True.
I. True.True.True.False.False.
J. True.True.False.True.True.
Answer: B
Let Γ and Δ be sets of sentences in Propositional Logic, and let φ and ψ be individual sentences in Propositional Logic. State whether each of the following statements is true or false.
a.	If Γ ⊨ φ and Δ ⊨ φ, then Γ ∩ Δ ⊨ φ.	
b.	If Γ ⊨ φ and Δ ⊨ φ, then Γ ∪ Δ ⊨ φ.	
c.	If Γ ⊨ φ and Δ ⊭ φ, then Γ ∪ Δ ⊨ φ.	
d.	If Γ ⊭ ψ, then Γ ⊨ ¬ψ.	
e.	If Γ ⊨ ¬ψ, then Γ ⊭ ψ.

Options:
A. True, True, False, True, True
B. False, True, False, False, True
C. False, True, False, True, False
D. True, False, False, True, True
E. True, False, True, False, False
F. False, True, True, False, False
G. False, False, True, False, True
H. True, True, True, True, False
I. False, False, True, True, False
J. True, True, False, False, True
Answer: F
Consider a version of the Blocks World with just three blocks - a, b, and c. The on relation is axiomatized below.
||||
|----------|---------|----------|
| ¬on(a,a) | on(a,b) | ¬on(a,c) |
| ¬on(b,a) | ¬on(b,b) | on(b,c) |
| ¬on(c,a) | ¬on(c,b) | ¬on(c,c) |
Let's suppose that the above relation is defined as follows.
$$∀x.∀z.(above(x,z) ⇔ on(x,z) ∨ ∃y.(above(x,y) ∧ above(y,z)))$$
A sentence φ is consistent with a set Δ of sentences if and only if there is a truth assignment that satisfies all of the sentences in Δ ∪ {φ}. Say whether each of the following sentences is consistent with the sentences about on and above shown above. Be careful. It's tricky.
a.	above(a,c)	
b.	above(a,a)	
c.	above(c,a)

Options:
A. Consistent, Consistent, Consistent
B. Consistent, Inconsistent, Consistent
C. Consistent, Inconsistent, Inconsistent
D. Consistent, Consistent, Inconsistent
E. Inconsistent, Consistent, Inconsistent
F. Inconsistent, Inconsistent, Inconsistent
G. Inconsistent, Inconsistent, Consistent
H. Inconsistent, Consistent, Consistent
Answer: A
Suppose an undirected graph $G$ has 10 edges, with two vertices of degree 3 and two vertices of degree 4, and all other vertices have degrees less than 3. Find the minimum number of vertices in $G$. For the case with minimum vertices, write out the degree sequence of $G$, $\Delta(G)$, $\delta(G)$.

Options:
A. 7, (2,2,2,3,4,4,4), 4, 2
B. 6, (2,2,3,3,4,4,4), 4, 2
C. 7, (1,2,3,3,3,4,4), 4, 1
D. 8, (2,2,3,3,3,4,4), 4, 2
E. 7, (2,2,2,3,3,4,4), 4, 2
F. 8, (1,2,2,3,3,4,4), 4, 1
G. 6, (2,2,3,3,4,4,2), 4, 2
H. 8, (2,2,2,2,3,3,4), 4, 2
I. 7, (1,1,2,3,3,4,4), 4, 1
J. 7, (2,2,3,3,4,4,3), 4, 2
Answer: E
A wheel graph is formed by adding a new vertex (called the hub) to a cycle and connecting this vertex to each vertex on the cycle with edges (called spokes). Find the expression for the number of spanning trees in a wheel graph with $\boldsymbol{\pi}$ spokes.

Options:
A. $W_{\mathrm{3}} = 16, \quad W_{\mathrm{4}} = 45, \quad W_{\mathrm{5}} = 121.66$,
$W_n - 4 W_{n-1} + 4 W_{n-2} - W_{n-3} = 0 \quad \text{for} \quad n \geq 6$
B. $W_{\mathrm{3}} = 16, \quad W_{\mathrm{4}} = 45, \quad W_{\mathrm{5}} = 121.66$,
$W_n - 2 W_{n-1} + 2 W_{n-2} - W_{n-3} = 0 \quad \text{for} \quad n \geq 6$
C. $W_{\mathrm{3}} = 16, \quad W_{\mathrm{4}} = 45, \quad W_{\mathrm{5}} = 121.66$,
$W_n - 5 W_{n-1} + 5 W_{n-2} - W_{n-3} = 0 \quad \text{for} \quad n \geq 6$
D. $W_{\mathrm{3}} = 16, \quad W_{\mathrm{4}} = 45, \quad W_{\mathrm{5}} = 121.66$,
$W_n - 4 W_{n-1} + 3 W_{n-2} - W_{n-3} = 0 \quad \text{for} \quad n \geq 6$
E. $W_{\mathrm{3}} = 16, \quad W_{\mathrm{4}} = 45, \quad W_{\mathrm{5}} = 121.66$,
$W_n - 6 W_{n-1} + 4 W_{n-2} - W_{n-3} = 0 \quad \text{for} \quad n \geq 6$
F. $W_{\mathrm{3}} = 16$,
$W_n - 3 W_{n-1} + 3 W_{n-2} - W_{n-3} = 0 \quad \text{for} \quad n \geq 3$
G. $W_{\mathrm{3}} = 16, \quad W_{\mathrm{4}} = 45, \quad W_{\mathrm{5}} = 121.66$,
$W_n - 4 W_{n-1} + 4 W_{n-2} - 2W_{n-3} = 0 \quad \text{for} \quad n \geq 6$
H. $W_{\mathrm{3}} = 16, \quad W_{\mathrm{4}} = 45, \quad W_{\mathrm{5}} = 121.66$,
$W_n - 3 W_{n-1} + 3 W_{n-2} - W_{n-3} = 0 \quad \text{for} \quad n \geq 6$
I. $W_{\mathrm{3}} = 16, \quad W_{\mathrm{4}} = 45, \quad W_{\mathrm{5}} = 121.66$,
$W_n - 4 W_{n-1} + 4 W_{n-2} - W_{n-3} = 0 \quad \text{for} \quad n \geq 5$
J. $W_{\mathrm{3}} = 16, \quad W_{\mathrm{4}} = 45, \quad W_{\mathrm{5}} = 121.66$,
$W_n - 4 W_{n-1} + 5 W_{n-2} - W_{n-3} = 0 \quad \text{for} \quad n \geq 6$
Answer: A
The first Chinese modern newspaper established by Western missionaries in China proper is ().

Options:
A. The Bee Hwa
B. Western Imperial News Record
C. Coastal Merchants Press Review
D. Peking Foreign Trade Journal
E. China Mission Daily Reporter
F. Northern Southern Weekly Chronicle
G. The Chinese Repository
H. Oriental Christian Messenger
I. The Canton Register
J. Eastern Western Monthly Magazine
Answer: J
Consider the set B* of all strings over the alphabet set B = {0, 1} with the concatenation operator for strings ________

Options:
A. forms a non-commutative group
B. needs additional mapping rules
C. does not form a group
D. does not have the right identity element
E. fails to preserve length values
F. misses binary string elements
G. lacks an inverse composition rule
H. forms a group if the empty string is removed from
I. violates closure requirements
J. breaks the associative property
Answer: C
Erratic Behavior occurs when an individual acts in a manner that lacks consistency, regularity, and uniformity. Which situation below is the best example of Erratic Behavior?

Options:
A. In recent days, David, formerly a consistent performer, has displayed mood swings, refused to follow procedures, and acted aggressively toward teammates.
B. During the last week, Thomas, normally a quiet neighbor, has been playing loud music at random hours, shouting at passersby, and vandalizing cars.
C. In the past month, Jeffrey, who has been a model employee for three years, has repeatedly called in sick, forgotten important meetings, and been verbally abusive to colleagues.
D. Since last month, Karen, typically a reliable manager, has started changing policies daily, yelling at staff randomly, and leaving work without notice.
E. Over recent weeks, Sarah, previously known for her punctuality, has been arriving at different times each day, missing deadlines, and sending confusing emails.
F. Throughout this quarter, Michael, once the top salesperson, has begun missing appointments, speaking rudely to customers, and showing up inappropriately dressed.
G. In her final semester, Patricia, usually a straight-A student, has started skipping classes, submitting late work, and arguing with her professors regularly.
H. Julia cannot contain her anger whenever the subject of local politics is discussed.
I. Martin has just been told that he is being laid off. Before leaving his supervisor's office, he punches a hole in the door.
J. Rhonda has visited the dealership several times, but she still cannot decide which car to buy.
Answer: C
Which of the following statements about journalism are correct?1. Investigative reporting refers to a form of reporting that objectively explains and analyzes an event using a large amount of background material, but only presents part of the news content.2. The dissemination of news (information) is continuous; the second and third instances of dissemination can also be considered news (information) because each dissemination adds new value and meaning to the news.3. Public opinion refers to the opinions or attitudes expressed publicly or privately by the public about specific social or public affairs within a certain time and space, which may not need to be consistent but can influence certain social behaviors.4. News falsification refers to cases where the facts in news reports do not align with reality, meaning that the five key elements of the news report cannot withstand scrutiny.

Options:
A. 1,2,3
B. 1,4
C. 1,3,4
D. 1
E. 3
F. 4
G. 3,4
H. 2,3,4
I. 1,2
Answer: A
Which of the following statements about dance are correct?
1.The ballroom scene in the ballet "Onegin" is a microcosm of society.2.The angular stage choreography in "秦王点兵" reflects the martial spirit theme of Tang Dynasty military dance..
3.Korean Buddhist dance was formed when Buddhist dance from China merged with traditional Korean fan dance.4.All classical Indian dance repertoires must be from ancient times.

Options:
A. 1,2,4
B. 1,2
C. 1,3,4
D. 1,2,3,4
E. 3,4
F. 2,4
G. 2,3,4
H. 1,3
I. 2,3
J. 1,4
Answer: J
Which of the following statements about forestry are correct?
1. Forest ecosystem service value assessment includes soil erosion control
2. Wind force is the main limiting factor for tree growth
3. Shrub forest is one of the forest type classifications in forestry
4. Mongolian Pine (Pinus sylvestris var. mongolica) is a common fast-growing tree species
5. The interspecific relationship between Masson Pine (Pinus massoniana) and Oil Tea (Camellia oleifera) in mixed plantations is essentially an ecological niche relationship
6. Japanese Fir (Abies firma) does not belong to the pine family (Pinaceae)

Options:
A. 3,5
B. 2,6
C. 1,6
D. 1,2,3
E. 1,4,5,6
F. 1,4,6
G. 2,3
H. 5,6
I. 4,5
J. 3,4
Answer: I
When $I_{1} / \sigma\gg1$ and $I_{0}=0$, what is the approximate bit error rate of an asynchronous heterodyne ASK receiver? Assume $I_{D}=I_{1} / 2$.

Options:
A. $\mathrm{B E R}=\frac{1} {16} \mathrm{e x p} \left[ \right.-I_{1}^{2} / ( \, 8 \sigma^{2} \, ) \; ]$
B. $\mathrm{B E R}=\frac{1} {2} \mathrm{e x p} \left[ \right.-I_{1} / ( \, 8 \sigma^{2} \, ) \; ]$
C. $\mathrm{B E R}=\frac{1} {8} \mathrm{e x p} \left[ \right.-I_{1}^{2} / ( \, 8 \sigma^{2} \, ) \; ]$
D. $\mathrm{B E R}=\frac{1} {2} \mathrm{e x p} \left[ \right.-I_{1}^{2} / ( \, 32 \sigma^{2} \, ) \; ]$
E. $\mathrm{B E R}=\frac{1} {2} \mathrm{e x p} \left[ \right.-I_{1}^{2} / ( \, 4 \sigma^{2} \, ) \; ]$
F. $\mathrm{B E R}=\frac{1} {2} \mathrm{e x p} \left[ \right.-I_{1}^{2} / ( \, 8 \sigma \, ) \; ]$
G. $\mathrm{B E R}=\frac{1} {4} \mathrm{e x p} \left[ \right.-I_{1}^{2} / ( \, 8 \sigma^{2} \, ) \; ]$
H. $\mathrm{B E R}=\frac{1} {2} \mathrm{e x p} \left[ \right.-I_{1}^{2} / ( \, 16 \sigma^{2} \, ) \; ]$
I. $\mathrm{B E R}=\frac{1} {2} \mathrm{e x p} \left[ \right.-I_{1}^{2} / ( \, 2 \sigma^{2} \, ) \; ]$
J. $\mathrm{B E R}=\frac{1} {2} \mathrm{e x p} \left[ \right.-I_{1}^{2} / ( \, 8 \sigma^{2} \, ) \; ]$
Answer: J
Which of the following statements about economic history are correct?
1. Kondratieff emphasized explaining long waves through external incidental factors. Each economic long wave is attributed to the disruption and restoration of economic equilibrium caused by the renewal and replacement of major fixed capital goods.2. The Phillips Curve can demonstrate the simultaneous achievement of three indicators: high economic growth rate, low inflation rate, and low unemployment rate.3. The common ground between long wave theory and Marxist reproduction theory lies in their identical objects of study. From their perspective, the cycle from crisis and depression to recovery and boom is one cycle, and from trough to peak and back to trough is also a cycle.4. Hirsch believed that Meadows and others focused on "distant and uncertain material limits to growth" while "ignoring the existing social limits to growth," suggesting they were "misplacing their attention."

Options:
A. 1,4
B. 1,2,3
C. 2,3,4
D. 1,2,3,4
E. 1,2
F. 1,3
G. 2,3
H. 3,4
I. 2,4
Answer: H
In the following four options, which one can most reasonably explain how the dog couldn't get out but mysteriously disappeared, yet the traces on the ground suggest no involvement from outsiders or other animals?

Options:
A. The dog dug a tunnel and escaped the house.
B. The dog was eaten by a monster.
C. The dog was trapped in a drainage well and suffocated to death.
D. The dog ran away through the windowsill.
Answer: C
Which of the following statements is TRUE regarding the complete graph Kₙ?

Options:
A. Kₙ is a simple graph.
B. The number of edges in Kₙ is given by the combination formula C(n, 2).
C. Kₙ is the graph with n vertices that has the fewest edges.
D. If n is prime, then Kₙ is a bipartite graph.
E. Kₙ is the graph with n vertices having the maximum number of edges among disconnected graphs.
F. Kₙ has n² edges.
G. Kₙ is the graph with n vertices that has the maximum number of edges among all graphs (including non-simple graphs).
H. Kₙ has n(n-1)/2 edges.
I. Kₙ has n(n-1) edges.
J. Kₙ is n-regular.
Answer: B
The goal of technical management in the media content production process is to integrate media content resources and business processes, relying on the internal information system platform of media enterprises ( )

Options:
A. ERP
B. EIP
C. CRM
D. HR
Answer: B
A military member accused of a serious crime may receive which of the following?

Options:
A. An acquisition and cross-servicing agreement
B. A sanction enforcement
C. A general court martial
D. An adversary template
Answer: C
Which of the following statements about sets is INCORRECT?

Options:
A. The intersection of sets has at least one element and has an identity element.
B. The complement of a set is also a set.
C. The number of elements in an empty set cannot be 2004.
D. The intersection of empty sets is an empty set.
E. The set of all subsets of a set with 21 elements is of size 2²¹.
F. The intersection of sets is also a set.
G. If R is the universal set, then a set with more than one element and contained within R is also a universal set.
H. If a set has at least one element, it has at least one subset.
I. A set with 11 elements has subsets.
J. There exists a set whose elements satisfy a specific condition defining the set.
Answer: J
Xiao Zhang's claim will not hold, because what he needs to prove is related to chemistry, and he is a physicist, a world-renowned physicist. If the following premise is true, which conclusion most strongly supports the above statement?
Premise: If Xiao Zhang's claim holds, then his claim has nothing to do with chemistry.

Options:
A. Xiao Zhang's argument does not necessarily mean that other people's statements are wrong.
B. Xiao Zhang has talked about chemistry occasionally.
C. Xiao Zhang's claim is a physics problem.
D. Xiao Zhang is a chemist.
E. Xiao Zhang's claim is unrelated to physics.
F. Xiao Zhang's claim is not a chemistry problem.
G. Everyone except Xiao Zhang is wrong about chemistry.
H. Xiao Zhang's claim is valid.
I. Xiao Zhang's claim is flawed.
J. Xiao Zhang has never studied chemistry.
Answer: I
Some argue that tackling in rugby is dangerous. However, in 1920, legendary rugby player Cliff Morgan tragically died after being tackled during a match. While introducing new safety regulations, how should authorities justify banning or restricting tackling in rugby?

Options:
A. Comparing rugby to other sports with different safety regulations.
B. Conducting surveys or polls to gauge public opinion on tackling.
C. Using rhetorical questions to persuade the audience.
D. Citing expert opinions from medical professionals or sports scientists.
E. Appealing to tradition and the historical significance of tackling in rugby.
F. Using emotional appeals to evoke sympathy and concern.
G. Presenting statistical data on injuries caused by tackling.
H. Using common sense reasoning to explain a general conclusion.
I. Using scientific or technological evidence to demonstrate causality.
J. Using a specific, concrete example to illustrate a general conclusion.
Answer: J
Which ancient Chinese book preserves the most myths?

Options:
A. Strange Tales from a Chinese Studio or Strange Stories from a Chinese Studio
B. Journey to the West
C. Master Who Embraces Simplicity
D. The Huainanzi
E. Classic of Mountains and Rivers
F. Declarations of the Perfected or Zhen'gao
G. Extensive Records of the Taiping Era
H. Records of Searching for Spirits or In Search of the Supernatural
I. Records of the Three Sovereigns
J. Investiture of the Gods or The Creation of the Gods
Answer: E
In a computer with dynamic partition storage management, the main memory capacity is 55MB (initially empty), using the Best Fit algorithm. The sequence of allocation and release is: allocate 15MB, allocate 30MB, release 15MB, allocate 8MB, allocate 6MB. At this point, the size of the largest free partition in the main memory is ()

Options:
A. 14MB
B. 11MB
C. 9MB
D. 8MB
E. 10MB
F. 12MB
G. 13MB
H. 7MB
I. 15MB
J. 16MB
Answer: C
"In the art of war, to subdue the enemy without fighting is the supreme excellence. To win one hundred victories in one hundred battles is not the highest skill; to subdue the enemy without fighting is the highest skill." This passage mainly embodies the ( ) thought in "The Art of War" by Sun Tzu.

Options:
A. Comprehensive Victory
B. Total Victory
C. Swift Victory
D. Ultimate Victory
E. Moral Victory
F. Prior Victory
G. Strategic Victory
H. Perfect Victory
I. Thorough Victory
J. Complete Victory
Answer: J
Given the phase equilibrium relationship of dilute ammonia water at 20°C and atmospheric pressure is Y*=0.94X, if a mixed gas containing 6% (mole fraction) of ammonia comes into contact with ammonia water with X=0.05, then ( ).

Options:
A. cannot determine
B. equilibrium has been reached, no process occurs
C. desorption process
D. equilibrium will shift towards desorption
E. absorption process
F. desorption process will eventually lead to absorption
G. desorption process will eventually lead to equilibrium
H. equilibrium will eventually shift towards desorption
I. equilibrium will shift towards absorption
J. equilibrium will eventually shift towards absorption
Answer: E
Which army of the Chinese People's Volunteers annihilated an American reinforced regiment in the battle of Sinhung-ni, the only one of its kind during the Korean War?

Options:
A. 40th Army
B. 23rd Army
C. 25th Army
D. 20th Army
E. 29th Army
F. 28th Army
G. 27th Army
H. 26th Army
I. 39th Army
J. 38th Army
Answer: G
When it is necessary to remove residual heat and moisture from buildings in summer, which of the following statements is correct?

Options:
A. Use a medium with an average temperature higher than the dew point temperature of the room air to cool down, while using a desiccant dehumidifier to dehumidify, and use electric energy to regenerate the adsorbent
B. Use a medium with an average temperature equal to the dew point temperature of the room air to cool down and dehumidify
C. Use a medium with an average temperature equal to the dew point temperature of the room air to cool down, while using a medium with a temperature higher than the dew point temperature of the room air to dehumidify
D. Use a medium with an average temperature lower than the dew point temperature of the room air to cool down, while using a medium with a temperature equal to the dew point temperature of the room air to dehumidify
E. Use a medium with an average temperature higher than the dew point temperature of the room air to cool down, while using a medium with a temperature equal to the dew point temperature of the room air to dehumidify
F. Use a medium with an average temperature lower than the dew point temperature of the room air to cool down and dehumidify
G. Use a medium with an average temperature equal to the dew point temperature of the room air to cool down, while using a medium with a temperature lower than the dew point temperature of the room air to dehumidify
H. Use a medium with an average temperature higher than the dew point temperature of the room air to cool down, while using a solution dehumidification unit with a heat pump to dehumidify, using the condensation heat of the heat pump to regenerate the solution, and using the cooling capacity produced by the heat pump to cool the concentrated solution
I. Use a medium with an average temperature lower than the dew point temperature of the room air to cool down, while using a medium with a temperature higher than the dew point temperature of the room air to dehumidify
J. Use a medium with an average temperature higher than the dew point temperature of the room air to cool down, while using a medium with a temperature lower than the dew point temperature of the room air to dehumidify
Answer: F
The sum of the series $\sum\limits_{n=0}^{\infty }{(-1)^{n}\frac{n+1}{(2n+1)!}}$ is ( )

Options:
A. ${\frac{1}{2}}$(sin1+cos1)
B. ${\frac{1}{2}}$(cos1+2sin1)
C. ${\frac{1}{2}}$(cos1-2sin1)
D. ${rac{1}{2}}$(cos1-sin1)
E. ${\frac{1}{2}}$(cos1+sin1)
F. ${\frac{1}{2}}$(2cos1-sin1)
G. ${\frac{1}{2}}$(2cos1+sin1)
H. ${rac{1}{2}}$(-sin1-cos1)
I. ${\frac{1}{2}}$(cos1-sin1)
J. ${rac{1}{2}}$(sin1-cos1)
Answer: E
Regarding the structure of a three-phase fully controlled bridge rectifier circuit, the requirements for trigger pulses, and the conduction situation, which of the following descriptions is correct?

Options:
A. The conduction sequence of the thyristors is VT1-VT3-VT4-VT2-VT5-VT6
B. The conduction sequence of the thyristors is VT1-VT4-VT3-VT2-VT5-VT6
C. The conduction sequence of the thyristors is VT1-VT2-VT4-VT3-VT5-VT6
D. The conduction sequence of the thyristors is VT1-VT3-VT5-VT2-VT4-VT6
E. The voltage on the load is composed of parts of three phase voltages
F. The conduction sequence of the thyristors is VT1-VT2-VT3-VT4-VT5-VT6
G. It can be considered as a parallel connection of one group of common cathode and one group of common anode three-phase half-wave controlled rectifier circuits
H. The conduction sequence of the thyristors is VT1-VT3-VT2-VT4-VT6-VT5
I. The conduction sequence of the thyristors is VT1-VT4-VT2-VT5-VT3-VT6
Answer: F
Given that at frequency f=0.5 GHz, the directivity coefficient of a whip antenna of height h above an ideal ground is D, then at this frequency, the directivity coefficients of a dipole antenna and a folded dipole antenna of length 2h in free space are ( ) times D, respectively.

Options:
A. 1/2, 1/3
B. 1, 1/4
C. 1/4, 1/2
D. 1/2, 1/4
E. 1/2, 1/5
F. 1, 1
G. 1/2, 1
H. 1, 1/2
I. 1/4, 1/4
J. 1/2, 1/2
Answer: J
Which meeting proposed the 'Resolution on the Establishment of People's Communes in the Countryside', suggesting that 'the form of people's communes should be actively used to explore a specific path to communism?'

Options:
A. The Second Zhengzhou Conference
B. The Lushan Conference
C. The Second Plenary Session of the Eighth National Congress of the CPC (1958)
D. The Second Plenary Session of the Eighth National Congress of the CPC
E. The First Plenary Session of the Eighth National Congress of the CPC
F. The First Zhengzhou Conference
G. The Third Plenary Session of the Eighth National Congress of the CPC (1959)
H. The Beidaihe Conference
I. The Third Plenary Session of the Eighth National Congress of the CPC
J. The Third Plenary Session of the Eighth National Congress of the CPC (1958)
Answer: H
Indefinite integral $\int\left(\frac{2\sin x}{{x}^{3}}-\frac{2\cos x}{{x}^{2}}-\frac{\sin x}{x}\right) \text{d}x=$

Options:
A. $-\frac{\sin x}{{x}^{2}}+\frac{\cos x}{x}+C$
B. -\frac{\sin x}{{x}^{2}}-\frac{\cos x}{x}+\frac{\sin x}{{x}^{3}}+C
C. $-\frac{\sin x}{{x}^{2}}-\frac{\cos x}{x^2}+C$
D. None of the above options is correct
E. -\frac{\sin x}{{x}^{2}}+\frac{\cos x}{x^2}+C
F. -\frac{\sin x}{{x}^{2}}-\frac{\cos x}{x}+\frac{\cos x}{{x}^{2}}+C
G. $-rac{\sin x}{{x}^{2}}-rac{\sin x}{x}+rac{\cos x}{x}+C$
H. $-rac{\sin x}{{x}^{2}}-rac{\cos x}{x}+C$
I. $-rac{\sin x}{x}+rac{\cos x}{x^2}+C$
J. -\frac{\sin x}{{x}^{2}}-\frac{\cos x}{x}+\frac{\sin x}{x}+C
Answer: A
The standard form of the quadratic form `f(x_1,x_2,x_3) = 2x_1x_2+2x_1x_3+2x_2x_3` is ()

Options:
A. `f=2y_1^2+y_2^2+y_3^2`
B. f=2y_1^2+y_2^2-2y_3^2
C. `f=2y_1^2-y_2^2+y_3^2`
D. `f=2y_1^2+y_2^2-y_3^2`
E. `f=-2y_1^2-y_2^2-y_3^2`
F. f=2y_1^2-y_2^2-2y_3^2
G. `f=2y_1^2+y_2^2+2y_3^2`
H. f=2y_1^2-y_2^2+3y_3^2
I. `f=2y_1^2-y_2^2-y_3^2`
J. f=2y_1^2-y_2^2+2y_3^2
Answer: I
The transfer function of the object is \(G(s)=\dfrac{K}{s(s+1)}\), and it is equipped with a zero-order hold. In this closed-loop sampling system, \(T=0.1\rm s\). The gain range that ensures the stability of this closed-loop sampling system is

Options:
A. \(K< 4.36\)
B. \(K< 15.34\)
C. \(K< 19.34\)
D. \(K< 20.34\)
E. \(K> 4.36\)
F. \(K< 10.34\)
G. \(K< 17.34\)
H. \(K< 18.34\)
I. \(K> 20.34\)
J. \(K< 16.34\)
Answer: D
The phrase 'Gai zhi zao yu zhan yi, you si zhi' is the evaluation of Liu Guo by which of the following ci critics in which work?

Options:
A. Tao Zongyi 'Nancun Xugenglu'
B. Tao Zongyi 'Nancun Chuogenglu'
C. Huang Sheng 'The Flower Hermit's Selection of Ci'
D. Tao Zongyi 'Nancun Chuogenglu: Selection and Explanation'
E. Tao Zongyi 'The Flower Hermit's Selection of Ci'
F. The General Catalogue of the Four Treasuries
G. Yu Beiyun 'Selection and Explanation of Song Ci'
H. Tao Zongyi 'Nancun Chuogenglu: Selection and Explanation of Ci'
I. Tao Zongyi 'Nancun Chuogenglu: Selection of Ci'
J. Tao Zongyi 'Selection and Explanation of Song Ci'
Answer: B
Marx and Engels founded scientific socialism, fundamentally surpassing utopian socialism, achieving the great leap from utopia to science in socialism. This surpassing is embodied in

Options:
A. Marx's theory of surplus value reveals the opposition between the proletariat and the bourgeoisie, scientifically proving the historical mission of the proletariat to overthrow the old capitalist world and build a new socialist world
B. The materialist conception of history and Marx's theory of surplus value together provided a scientific basis for the inevitability of socialism, but did not directly address the immediate goals of the proletarian revolution.
C. The materialist conception of history founded by Marx, on the basis of revealing the general laws of human social development and the laws of capitalist development, scientifically proved the historical inevitability of socialism replacing capitalism
D. The materialist conception of history and Marx's theory of surplus value together provided a scientific basis for the inevitability of socialism, but did not directly address the immediate steps for the proletarian revolution.
E. Marx's theory of surplus value and the materialist conception of history together provided a comprehensive critique of capitalism, but did not directly address the strategic and tactical strategies of the proletarian revolutionary struggle.
F. It helped people find the power to transform the old capitalist society and the path to the new socialist society
G. Scientifically foresaw the basic characteristics of future society and proposed the theory of the transition period from capitalism to communist society
H. The materialist conception of history and Marx's theory of surplus value together provided a scientific basis for the inevitability of socialism, but did not directly address the practical strategies for the proletarian revolution.
I. The materialist conception of history and Marx's theory of surplus value together provided a scientific basis for the inevitability of socialism, but did not fully address the practical strategies for the proletarian revolution.
J. Proposed the strategic and tactical strategies of the proletarian revolutionary struggle
Answer: C
If the determinant \( \left| \begin{matrix} a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \\ a_{31} & a_{32} & a_{33} \end{matrix} \right| = d \ne 0 \), then \( \left| \begin{matrix} 2a_{11} & 2a_{12} & 2a_{13} \\ 3a_{31} & 3a_{32} & 3a_{33} \\ -a_{21} & -a_{22} & -a_{23} \end{matrix} \right| = \)

Options:
A. -18d
B. -3d
C. -6d
D. 3d
E. -12d
F. -2d
G. 18d
H. 12d
I. 6d
J. 2d
Answer: I
What is the rational kernel of Hegel's philosophy that Marxist philosophy absorbs?

Options:
A. Dialectics
B. Idealist Dialectics
C. Materialist Epistemology
D. Materialist Dialectics
E. Knowability
F. Idealism
G. Epistemology
H. Materialist Idealism
I. Material Dialectics
J. Materialism
Answer: A
Song Luo wrote in his couplet: 'With military prowess rich in his heart, his achievements in one generation tower over the Song Dynasty; with the welfare of the world at heart, the reverence for him through the ages is heavy on the Su Terrace,' the person described is ( _____ )

Options:
A. Sima Guang
B. Fan Zhongyan
C. Su Shi
D. Wang Anshi
E. Su Xun
F. Su Zhe
G. Wang Yangming
H. Su Dongpo
Answer: B
A 32-year-old male patient presents with burning pain in the stomach, heartburn, dry and bitter mouth, thirst but unwilling to drink, sweet and sticky mouth, poor appetite and nausea, heavy body and fatigue, yellow urine, and constipation. The tongue coating is yellow and greasy, and the pulse is slippery and rapid. The pathogenesis is:

Options:
A. Damp-heat in the middle, stomach qi descending
B. Insufficient stomach yin, stomach losing its nourishment
C. Damp-heat in the middle, stomach qi ascending
D. Damp-heat in the spleen, affecting the stomach's ascending function
E. Damp-heat in the liver, affecting the stomach's descending function
F. Damp-heat obstructing the middle, stomach qi stagnation
G. Liver depression transforming into fire, heat stagnating in the stomach
H. Damp-heat in the spleen, affecting the stomach's descending function
I. Insufficient stomach yin, internal scorching of false fire
J. Mingled cold and heat, stomach losing its descending function
Answer: F
A company that produces washing machines has seen a significant increase in its accounts receivable at the end of the period compared to the beginning due to an aggressive credit sales strategy, and its inventory at the end of the period has also increased significantly compared to the beginning. How should the company adjust its asset structure at this time?

Options:
A. Increase the intensity of credit sales to significantly raise the proportion of accounts receivable in total assets
B. Increase the intensity of credit sales while maintaining current inventory levels to balance the asset structure
C. The current structure is good, no adjustments are needed
D. Increase the intensity of credit sales while reducing inventory to optimize the asset structure
E. Increase the intensity of credit sales while moderately increasing inventory to balance the asset structure and improve liquidity
F. Hire a consulting firm to find solutions
G. Improve the core competitiveness of the product and adopt a conservative credit sales strategy to reduce the proportion of accounts receivable
H. Increase the intensity of credit sales while moderately reducing inventory to balance the asset structure and improve liquidity
I. Increase the intensity of credit sales while also increasing inventory to boost total assets
J. Increase the intensity of credit sales while moderately increasing inventory to balance the asset structure and improve liquidity, but also implement stricter credit terms to reduce the risk of bad debts
Answer: G
Let the random variables ( X_1 ,X_2 ,X_3 ,X_4 ) be independent and identically distributed, with ( P{X_i=0}=0.6 ) and ( P{X_i =1}=0.4 ), ( i=1,2,3,4 ). Let the determinant ( X=left|{{begin{array}{*{20}c} {X_1 } &amp; {X_2 } {X_3 } &amp; {X_4 } end{array} }} right| ). Then ( P{X=1} ) is ( ).

Options:
A. ( 0.84 )
B. 0.1408
C. 0.1376
D. 0.1472
E. ( 0.1344 )
F. 0.1392
G. 0.1536
H. ( 0.7312 )
I. ( 0.16 )
J. 0.128
Answer: E
The general solution of the equation ( xydx + sqrt {1 - {x^2}} dy = 0 ) is ( ).

Options:
A. ( y = - Carcsin x )
B. y = C{e^{sqrt {1 - 2{x^2}} }}
C. ( y = C{e^{sqrt {1 - {x^2}} }} )
D. y = C{e^{sqrt {1 + {x^2}} }}
E. y = C{e^{sqrt {1 - 3{x^2}} }}
F. y = C{e^{2sqrt {1 - {x^2}} }}
G. y = C{e^{sqrt {2 - {x^2}} }}
H. ( y = Carcsin x )
I. y = C{e^{ - sqrt {1 + {x^2}} }}
J. ( y = C{e^{ - sqrt {1 - {x^2}} }} )
Answer: C
The definite integral $int_{frac{sqrt{3}}{3}}^{sqrt{3}}{xarctan xdx}in$

Options:
A. $left[ frac{pi }{9},frac{2pi }{3} right]$
B. $left[ frac{pi }{18},frac{pi }{3} right]$
C. $left[ frac{2pi }{3},2pi right]$
D. $left[ frac{pi }{10},frac{2pi }{4} right]$
E. $left[ 2pi ,4pi right]$
F. $left[ 0,frac{pi }{9} right]$
G. $left[ frac{pi }{10},frac{2pi }{5} right]$
H. $left[ frac{pi }{12},frac{pi }{4} right]$
I. $left[ frac{pi }{12},frac{2pi }{9} right]$
J. $left[ frac{pi }{18},frac{pi }{6} right]$
Answer: A
Find \( \int_L x^2 ds \), where \( L \) is the great circle intersected by the unit sphere \( x^2 + y^2 + z^2 = a^2 \) and the plane \( x + y + z = 0 \).

Options:
A. \\frac{1}{3}\\pi a^2
B. \frac{1}{2}\pi a^3
C. \frac{1}{3}\pi a^3
D. \frac{4}{3}\pi a^3
E. \\frac{2}{3}\\pi a^3
F. \\frac{1}{5}\\pi a^3
G. \\frac{1}{4}\\pi a^3
H. \\frac{1}{6}\\pi a^3
I. \\frac{3}{4}\\pi a^3
J. \pi a^3
Answer: E
Which of the following epigenetic modifications is crucial for the maintenance of chromatin structure, X chromosome inactivation, genomic imprinting, and the maintenance of normal cell function, as well as embryonic development and disease occurrence?

Options:
A. Histone methylation and DNA methylation
B. Histone demethylation
C. Histone phosphorylation
D. Histone methylation and DNA acetylation
E. Histone methylation and DNA demethylation
F. Histone acetylation
G. Histone deacetylation
H. DNA methylation
I. Histone ubiquitination
J. Histone methylation
Answer: H
In 1985, the chairman of the International Committee for Visual Anthropology, _________, visited China and introduced the concept of this discipline relatively early.

Options:
A. Barreksyv
B. Barreksya
C. Barreksyi
D. Barreksia
E. Barreksyj
F. Barreksy
G. Barreksky
H. Jean Rouch
I. Karl Heider
J. Timothy Asch
Answer: F
A primiparous woman with no history of surgery. Due to prolonged second stage of labor and decreased fetal heart rate, a posterior-lateral episiotomy and low forceps delivery were performed, delivering a live infant weighing 4000g. Two hours postpartum, she complained of perineal pain, a feeling of rectal fullness, and minimal vaginal bleeding. On examination: anemic appearance, blood pressure 89/55mmHg. The possible diagnosis is

Options:
A. Cervical laceration
B. Retained placenta
C. First-degree perineal laceration
D. Vaginal wall hematoma
E. Fourth-degree perineal laceration
F. Third-degree perineal laceration
G. Uterine rupture
H. Second-degree perineal laceration
I. Uterine atony
J. Perineal varicosities
Answer: D