下列哪些情况不属于违章作业()
A、高处作业穿硬底鞋
B、任意拆除设备上的照明设施
C、特种作业持证者独立进行操作
D、非岗位人员任意在危险要害区域内逗留
参考答案:C
The weather turned out to be fine yesterday.I the trouble to carry my umbrella with me.
A.should have taken
B.could have taken
C.needn’t have taken
D.mustn’t have taken
中、小河流一般不小于线路两侧各( )所形成的两条平行线内的水域。
A.20m
B.35m
C.50m
D.80m