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瓷绝缘子表面做成波纹形,主要作用是()

单选题
2021-09-01 23:40
A、增加电弧爬距
B、提高耐压强度
C、防止尘埃落在瓷绝缘上
D、加大绝缘子的抗弯强度
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正确答案
A

试题解析

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