题目内容

电容元件的容抗是电容电压与电流的瞬时值之比。

A. 对
B. 错

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在直流电路中，电感可以看作开路，电容可以看作短路。

A. 对
B. 错

单一参数电感元件的正弦交流电路中，消耗的有功功率等于零。

A. 对
B. 错

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A. alternative
B. compulsory
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A. tracked down
B. tracked out
C. modeled after
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