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單項(xiàng)選擇題

A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in（）.

A.generators
B.oil drums
C.the bridge
D.combustible metals

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單項(xiàng)選擇題

A position obtained by applying only your vessel’s coures and speed to a known position is a（）.

A.dead-reckoning position
B.fix B.estimated position
C.probable position
D.running fix

單項(xiàng)選擇題

A right-handed propeller will cause the survival craft to（）.

A.walk the stern to starboard in reverse
B.walk the stern to port in reverse
C.run faster than a lefe-handed propeller
D.right itself if capsized

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