单项选择题

Which of the listed burning materials would be described as a class "B" fire?（）

A.Acetylene
B.Lube oil
C.Grease
D.All of the above

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单项选择题

If an oil spill occurs on deck, you should （）.

A.cover the area with foam
B.cover the area with absorbent material
C.wash down immediately with a fire hose
D.wash down immediately with an oil dispersing solvent

单项选择题

Fire detecting systems on merchant vessels may be arranged to sense （）.

A.smoke
B.rate of temperature rise
C.ionized particles
D.all of the above

单项选择题

On a tank vessel, which of the following substances would be burning in a class "B" fire?（）

A.Oil
B.Wood
C.Rags
D.Electrical wiring