Problem: Please answer a question about the following article about Mali:
Anti-government protests in 1991 led to a coup, a transitional government, and a new constitution. Opposition to the corrupt and dictatorial regime of General Moussa Traore grew during the 1980s. During this time strict programs, imposed to satisfy demands of the International Monetary Fund, brought increased hardship upon the country's population, while elites close to the government supposedly lived in growing wealth. Peaceful student protests in January 1991 were brutally suppressed, with mass arrests and torture of leaders and participants. Scattered acts of rioting and vandalism of public buildings followed, but most actions by the dissidents remained nonviolent.
Strict rules were put in place to appease what monetary fund?
A: International Monetary Fund
Problem: Please answer a question about the following article about Hunter-gatherer:
In the 1950s, Lewis Binford suggested that early humans were obtaining meat via scavenging, not hunting. Early humans in the Lower Paleolithic lived in forests and woodlands, which allowed them to collect seafood, eggs, nuts, and fruits besides scavenging. Rather than killing large animals for meat, according to this view, they used carcasses of such animals that had either been killed by predators or that had died of natural causes. Archaeological and genetic data suggest that the source populations of Paleolithic hunter-gatherers survived in sparsely wooded areas and dispersed through areas of high primary productivity while avoiding dense forest cover.
Where did hunter-gatherer peoples live?
A: sparsely wooded areas
Problem: Please answer a question about the following article about Mali:
Although Mali has enjoyed a reasonably good inter-ethnic relationships based on the long history of coexistence, some hereditary servitude and bondage relationship exist, as well as ethnic tension between settled Songhai and nomadic Tuaregs of the north. Due to a backlash against the northern population after independence, Mali is now in a situation where both groups complain about discrimination on the part of the other group. This conflict also plays a role in the continuing Northern Mali conflict where there is a tension between both Tuaregs and the Malian government, and the Tuaregs and radical Islamists who are trying to establish sharia law.
What type of hereditary relationships still exist today?
A: servitude and bondage
Problem: Please answer a question about the following article about Light-emitting diode:
The currentvoltage characteristic of an LED is similar to other diodes, in that the current is dependent exponentially on the voltage (see Shockley diode equation). This means that a small change in voltage can cause a large change in current. If the applied voltage exceeds the LED's forward voltage drop by a small amount, the current rating may be exceeded by a large amount, potentially damaging or destroying the LED. The typical solution is to use constant-current power supplies to keep the current below the LED's maximum current rating. Since most common power sources (batteries, mains) are constant-voltage sources, most LED fixtures must include a power converter, at least a current-limiting resistor. However, the high resistance of three-volt coin cells combined with the high differential resistance of nitride-based LEDs makes it possible to power such an LED from such a coin cell without an external resistor.
What feature do most LED fixtures need to have?
A:
a power converter