Inductors store electric charge.
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Diodes allow electricity to flow either one direction.
A. 对
B. 错
Diodes also are called valves.
A. 对
B. 错
The symbol of NPN and PNP transistors is same.
A. 对
B. 错
ICs are complex circuits which have been etched onto tiny chips of semiconductor.
A. 对
B. 错
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