发电厂和变电所有爆炸危险且爆炸后可能波及发电厂和变电所内主要设备或严重 影响供电的建(构)筑物,防雷电感应的接地电阻不应大于()。A.30ΩB.20Ω...

作者: rantiku 人气: - 评论: 0
问题 发电厂和变电所有爆炸危险且爆炸后可能波及发电厂和变电所内主要设备或严重 影响供电的建(构)筑物,防雷电感应的接地电阻不应大于()。
选项 A.30Ω B.20Ω C. 10Ω D. 40Ω
答案 A
解析

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