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單項(xiàng)選擇題

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

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單項(xiàng)選擇題

Which of the following equipment is for protection against hypothermia?（）

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

單項(xiàng)選擇題

Which of the following equipment is for protection against drowing?（）

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

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