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低压电动机的绝缘电阻要求为()以上。
低压电动机的绝缘电阻要求为()以上。
A、0.5MΩ
B、1MΩ
C、2MΩ
D、5MΩ
正确答案:B
标签:
电动机
电阻
低压
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When a word is coined, it is always monosemic. But in the course of development, the same symbol must be used to express more meanings. The result is().
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The differences between sound and form are the following EXCEPT().