大型养路机械在无人值乘停留时，必须采取防溜措施，并在两端各（）处设置移动停车信号。_线路工共性规章类知识_全学科试题题库

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大型养路机械在无人值乘停留时，必须采取防溜措施，并在两端各（）处设置移动停车信号。
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