單項(xiàng)選擇題

An example of class "A" fire is a/an （）.

A.electrical fire in the engine room
B.oil fire in the engine room bilges
C.oil fire involving a grade "A" petroleum product
D.mattress fire in a stateroom

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單項(xiàng)選擇題

The most common type of containment device for spilled oil on the water is the use of （）.

A.straw
B.booms
C.skimmers
D.chemical dispersants

單項(xiàng)選擇題

A tank has been sealed and unventilated for a long period of timeWhich of the following conditions does this indicate?（）

A.The tank is safe to enter
B.The tank is especially dangerous to enter
C.Carbon monoxide is present
D.Water vapor present when the tank was sealed has oxidized