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一台变压器原边接在额定电压的电源上,当副边带纯电组负载时,则从原边输入的功率( )。

单选题
2021-09-01 17:03
A、只包含有功功率
B、只包含无功功率
C、既有有功功率,又有无功功率
D、为零
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正确答案
C

试题解析

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