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單項(xiàng)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

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單項(xiàng)選擇題

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

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

單項(xiàng)選擇題

Generally, when lifting an inflatable life raft back aboard ship you would use the（）.

A.towing bridle
B.main weather cover
C.external lifelines
D.righting strap