单项选择题
A.5A B.5.5A C.6A D.11A
A.314H B.100H C.0.01H D.3.14H
A.电流较电压提前π/2达到最大值 B.电压较电流提前π/2达到最大值 C.电流与电压同相 D.电流与电压反相
A.220V60W B.110V75W C.36V40W D.24V10W
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