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單項(xiàng)選擇題

What is used to test a tank for oxygen content?（）

A.Combustible gas indicator
B.Vapor indicator
C.Atmosphere analyzer kit
D.None of the above

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單項(xiàng)選擇題

What is the proper first aid for LPG in the eye? （）

A.Apply an ice pack to the eye
B.Keep the eyelid closed
C.Flush the eye with plenty of water
D.Rub the eye area clean

單項(xiàng)選擇題

Upon release to the atmosphere，LFG readily（）.

A.vaporizes
B.attacks caustically
C.rises
D.attacks corrosively