题目内容
正弦电路的功率因数,下列叙述错误的是()
2020-12-16
A.功率因数=有功功率/复功率
B.功率因数=有功功率/无功功率
C.功率因数=有功功率/视在功率
D.功率因数=视在功率/有功功率
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