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用西林电桥测量介质损耗角正切,可以灵敏地发现( )。

A、绝缘普遍性受潮

B、绝缘局部磨损

C、绝缘的局部受潮

D、绝缘中有小气泡

时间：2021-07-17 23:26 关键词：电力系统自动化技术高起专高电压技术 2019级毕业清考（考试分）

答案解析

A

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