题目内容

______is the device that provides amplification(the increase in current, voltage, or power of a signal)without appreciably altering the original signal.

A. analog
B. digital circuit
C. amplifier
D. power supplier

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In the common-emitter circuit, the base terminal of the transistor serves as the input, the collector is the output, and the______is common to both.

A. base
B. emitter
C. substance
D. collector

If there is no voltage gain, but the output power is greater than the input power, the amplifier is a _______ amplifier.

A. voltage
B. power
C. transistor
D. operational

Electronic circuits can be divided into ____groups:analog and digital.

A. two
B. three
C. one
D. four

列宁提出的“工人阶级的力量在于组织。不组织群众,无产阶级就一事无成。”是在证明组织建设的重要性。()

A. 对
B. 错