The Engine Interface Control Unit () handles the interface to ______ and<br/>Hydraulic Power Supply (). A: internal systems B: external systems C: control systems D: operating systems

Power control unit: controls the flow of electricity;

Suppose the demand and supply curves for good X are both linear. And, the demand price for the first unit of X is $28, and the supply price for the first unit of X is $6. If the equilibrium price for good X is $16 and the equilibrium quantity of X is 24,000 units, then total consumer surplus is $________, total producer surplus is $_________, and total social surplus is $_____________. A: $144,000; $120,000; $264,000 B: $672,000; $144,000; $384,000 C: $120,000; $144,000; $264,000 D: $28; $6; $16 E: $144,000; $672,000; $384,000

A technician receives a computer for repair and observes that the fan on the power supply is not moving. Which of the following should the technician do？ （） A: Move the power supply voltage switch to 220 volts. B: Add an additional fan to help cool the computer. C: Replace the cable that attaches the power supply to the motherboard. D: Replace the power supply.

The power that an amplifier delivers to a load is equal to the difference between the power that the circuit draws from the power supply and the power that the circuit dissipates. ? 正确|错误