單項選擇題

Gasoling fumes tend to（）.

A.settle near the bottom of the blige
B.settle near the top of the bilge
C.settle evenly throughout all levels of the bilge by mixing with air
D.disperse to atmosphere

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單項選擇題

Generally, the first action in extinguishing an LFG fire caused by escaping gas is to（）.

A.sweep flames away with water spray
B.shut off the leak
C.use a chemical foam fire extinguisher
D.call t e local fire department

單項選擇題

Generally, what is used to inflate life rafts?（）.

A.Non-toxic gas
B.oxygen
C.Hydrogen
D.Helium