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32. 判断交流或直流接触器的依据是: 。( )

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

时间：2021-09-01 19:12 关键词：青书学堂河北建筑工程学院现代控制技术及PLC（高起专）

答案解析

B

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