( )中所用的电缆不得有接头。A:立井井筒B:运输巷道。C:斜井D:工作面回风巷

作者: rantiku 人气: - 评论: 0
问题 ( )中所用的电缆不得有接头。
选项 A:立井井筒 B:运输巷道。 C:斜井 D:工作面回风巷
答案 A
解析

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