单项选择题
A.Heat-resistant B.Rubber gloves C.PVC gloves D.Leather gloves
Long hair should always be covered by（）when working wit...
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
Which of the following equipment is for protection agai...
单项选择题Which of the following equipment is for protection against hypothermia?（）
A.Safety helmets B.Buoyancy aids C.Breathing apparatus D.Immersion suits
单项选择题Which of the following equipment is for protection against drowing?（）
A.Safety helmets B.Buoyance aids C.Breathing apparatus D.Immersion suits
