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32. 判断交流或直流接触器的依据是: 。( )

单选题
2021-09-01 19:12
A、线圈电流的性质
B、主触点电流的性质
C、主触点的额定电流
D、辅助触点的额定电流
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正确答案
B

试题解析

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