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【Electrical Version】Daily Question 20180723

2018-07-27View Original

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When using high-voltage insulating rods in rainy outdoor conditions, an appropriate rain cover is necessary to prevent water from flowing onto the rod and to maintain a relatively dry surface. The rain cover is installed in the middle of the insulating rod; for those with a rated voltage of 10 kV or less, at least 2 rain covers are required, while for those with a rated voltage of 35 kV, at least () rain covers are needed. (A)2 (B)3 (C)4 (D)5 Answer: C

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