单项选择题
A.Safety helmets B.Buoyancy aids C.Breathing apparatus D.Immersion suits
Which of the following equipment is for protection agai...
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
Which of the following equipment is for body protection...
单项选择题Which of the following equipment is for body protection?（）
A.Safety helmets B.Goggles and sepctacles C.Breathing aparatus D.Safety suits
Which of the following equipment is for hand and foot p...
单项选择题Which of the following equipment is for hand and foot protection?（）
A.Safety helmets B.Goggles and sepctacles C.Breathing apparatus D.Gloves and safety boots
