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單項選擇題

What normally helps in detecting escaping gas? （）

A.Running hand along pipe
B.Red flame
C.Odor
D.Increase the line pressure

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單項選擇題

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

單項選擇題

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

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