题目内容 (请给出正确答案)
提问人:网友13***556 发布时间:2023年2月18日 09:46
[单选题]

人员下道避车的同时,必须将作业机具和材料移出线路,并放置和堆码牢固,不得侵入建筑限界.两线间距离小于()不得停留人员和放置机具和材料。

A.6.5m B.6m C.5m D.3m

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