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單項(xiàng)選擇題

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

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單項(xiàng)選擇題

A class "B" fire would most likely occur in the （）.

A.main switchboard
B.engine room bilge
C.breathing compartment
D.electric fresh water transfer pump

單項(xiàng)選擇題

The International Oil Pollution Prevention Certificate is valid for a period of （）.

A.one year from the date of issue
B.two years from the date of issue
C.three years from the date of issue
D.four years from the date of issue

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