單項選擇題What method of extinguishing fire in a hatch is the best to minimize damages to the cargoes?（）.
A.Foam
B.CO2
C.Water
D.All of the above
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1.單項選擇題When a pushing vessel and a vessel（）ahead are rigidly connected in a composite unit they shall be regarded as a power-driven vessel.
A.is pushed
B.being pushed
C.was pushed
D.be pushed
2.單項選擇題When a vessel is aground,（）.
A.she is underway
B.she is not underway
C.whether she is underway cannot be determined
D.she might be or not be underway
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In the Northern hemisphere northerly winds may cause temperature（）.
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The dew point temperature is（）.
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Bales close to the deckhead should be covered to prevent（）.
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