Please select the most similar patent number from A, B, C and D. Which number is?
A shredding-slicing device having random combinations of shredder blades and slicer blades and capable of continuous thickness adjustment comprises a base (1) which is provided with a slice thickness adjusting sheet (2), a slice thickness adjusting screw (3), shredder blades (4), and slicer blades (5). The slice thickness adjusting screw (3) is screwed to the slice thickness adjusting sheet (2), and the slice thickness adjusting sheet (2) can be finely adjusted by screwing the slice thickness adjusting screw (3). A slot I (6) for inserting a slicer blade (5) is provided on the base (1), and a slot II (7) for inserting a shredder blade (4) is provided on the slice thickness adjusting sheet (2). The device has a simple and reliable structure, and by providing slots where a slicer blade (5) and a shredder blade (4) can be inserted in or drawn out, blades can be replaced quickly, so that much more patterns can be cut and it is much easier for a consumer to use the device. The device is further provided with a thickness adjusting screw (3), and by screwing the thickness adjusting screw (3), the thickness of a vegetable slice can be controlled. The mechanism is easy to operate and has abundant functions, the complexity of blade machining is reduced, and the manufacturing costs are reduced.
A: Provided is a study desk that is adjustable according to a child&#39;s growth. The desk comprises a table top (1), an adjusting leg (2), an adjusting sleeve (3), an anti-slip foot (4), an adjusting hole (5) and an adjusting bolt (6), wherein an adjustable placement plate (9) is arranged above the table top (1), and the adjustable placement plate (9) is supported on the table top (1) through a support rod (17). The adjustable placement plate (9) comprises a horizontal plate (11) in a horizontal direction and an adjusting plate (10) rotatably connected through a hinge (12), wherein a fixed support plate (13) of a strip-shaped structure is fixed to an end, facing the horizontal plate (11), of a lower side face of the adjusting plate (10); the fixed support plate (13) extends towards the outer side of the adjusting plate (10), and an extension length of the fixed support plate is the thickness of the horizontal plate (11); and the lower side of the horizontal plate (11) is provided with a horizontal sliding groove (15) perpendicular to the fixed support plate (13), and a horizontal movable support plate (14) is slidably connected in the sliding groove (15).
B: An automatically controlled, adjustable-angle apparatus for animal brain for experimentation, comprising a base (1), left and right side plates (2) being arranged on the left and right sides of the base (1). An angle adjustment bottom plate (3) is arranged on the base (1) and between the left and right side plates (2), the upper surface of the angle adjustment bottom plate (3) taking the form of an inclined surface at a compensatory angle required for a brain tissue sample section, one end of the angle adjustment bottom plate (3) being movably connected to the base (1) by means of a linking joint, and the other end of the angle adjustment plate (3) being a free end. A forward- and backward-moving wedge-shaped supporting block (4) is arranged below the free end, a plurality of pairs of blade motion guide slots (5) that guide blades to move vertically are arranged in the left and right side plates (2), and blades for cutting a brain tissue sample are installed in the blade motion guide slots (5). The wedge-shaped support block (4) is fixedly connected to a ball screw nut (6) on one side, the ball screw nut (6) is mated with a ball screw (7), one end of the ball screw (7) is connected to an electric driving mechanism (8), and an angle measurement apparatus (9) for measuring the angle of the adjustable-angle bottom plate (3) is installed on the left and right side plates (2). Angle adjustment is implemented by means of an automatic control mechanism, and adjustment is convenient and accurate.
C: A food cutter, comprising a base (1), a support platform (2), a rotational moving assembly (3), a cutting mechanism (4), and a driving mechanism (5). The cutting mechanism (4) comprises a bracket (41) and blades provided on the bracket (41), the blades comprising a slicing blade (42) and a julienning blade working in concert with the slicing blade (42) for julienning; the julienning blade comprises a julienning blade body (43) which has at least three sides (431), at least two notches (432) for exposing the edges of the blade being provided on the surface of each side (431) at an interval, the intervals between the notches (432) on the surfaces of the sides (431) being different; and the bracket (41) is further provided with an adjustment mechanism for enabling the julienning blade to rotate along its own axis. Compared with the prior art, the food cutter overcomes the defect of frequently changing julienning blades in order to cut a product to be processed into julienne strips having different thicknesses. By enabling, using a rotational adjustment mechanism, the julienning blade to rotate along its own axis, so as to cause different sides (431) to work in concert with the slicing blade (42), julienne strips having different thicknesses can be produced.
D: Provided is a pulley (10) capable of being installed in an upright manner and an inverted manner. The pulley (10) is provided with a housing (3) and wheel components. The pulley (10) can realize two installation states, an installation state in which the pulley is visible and an installation state in which the pulley is embedded, and the pulley is provided with a height adjustment mechanism capable of adjusting the height of the pulley (10) in the two installation states. In this way, it is possible to select visible pulley installation or embedded pulley installation when a single pulley is utilized. In addition, an adjustment screw (1) and an adjustment nut (2) matching each other serve as the height adjustment mechanism, such that a screwdriver is not needed when the adjustment nut (2) is rotated for adjustment, thereby preventing the frequently occurring problem of the height of the pulley being unable to be adjusted by means of a screwdriver.
Answer: C