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單項選擇題

In relation to cargo gear，what does SWL mean?（）.

A.Safe working load
B.Ship's working lift
C.Starboard wing lift
D.Stress，weight，load

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單項選擇題

In nautical terminology a dog is a（）.

A.crow bar
B.device to force a water tight door against the frame
C.heavy steel beam
D.wedge

單項選擇題

If the engine of a survival craft does not start，check to see（）.

A.that the fuel valve is open
B.if the air supply system is open
C.if the water sprinkler system is open
D.if the limit switch is on

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