单项选择题

When choosing extinguishers to fight a Class “B” fire do NOT use（）.

A.carbon dioxide
B.dry chemical
C.foam (stored-pressure type)
D.water (cartridge-operated)

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单项选择题
What should be used to steer an open lifeboat if the rudder becomes lost or damaged?（）

A.Sea anchor
B.Steering oar
C.Spare rudder
D.Daggerboard
单项选择题
Vessel’s provisions refer to（）of the vessel.

A.fuel oil
B.vegetables and food
C.spare parts on board
D.ballast water
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