单项选择题

Long hair should always be covered by（）when working with or near moving machinery.

A.a helment
B.safety cap
C.an ear plug
D.face mask

点击查看答案&解析

上一题目录下一题

单项选择题

A.Safety helmets
B.Buoyancy aids
C.Breathing apparatus
D.Immersion suits

单项选择题

A.Safety helmets
B.Buoyance aids
C.Breathing apparatus
D.Immersion suits

单项选择题

A.Safety helmets
B.Goggles and sepctacles
C.Breathing aparatus
D.Safety suits