人力推车时1次只准推1辆,严禁在矿车两侧推车。同向推车的间距,在轨道坡度小于或等于()‰时,不得小于10米,坡度大于()‰时,不得小于()米。
参考答案:5、5、30
The situation is improving, but we are not out of the woods yet. What's the meaning of "the woods" in the
sentence. [ ]
A. order
B. danger
C. forest
D. question
计算机联锁设备检修作业时需有()措施。