【判断题】
第952题：建筑工程施工现场的消防安全由施工单位负责。实行施工总承包的由总承包单位负责
A. 对
B. 错
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答案
A
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【单选题】
为保证人身安全，除专业人员执行有关规定外，其他人员（包括所携带的物件）与牵引供电设备带电部分的距离，不得小于___ mm.
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【单选题】
在设有接触网的线路上，___攀登车顶及在车辆装载的货物之上作业；如确需作业时，须在指定的线路上，将接触网停电接地并采取安全防护措施后，方准进行.
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B. 严禁..
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【单选题】
遇机车换挂需将自动制动机列车主管压力由600 kPa改为500 kPa时，摘机前应对列车主管实施一次___kPa的最大减压量操纵.
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