單項(xiàng)選擇題In anchoring orders, up and down means（）.
A.the chain is not upright
B.the chain is tight
C.the chain is upright
D.the chain is slack
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1.單項(xiàng)選擇題In anchoring orders, walk back the chain means（）.
A.pay away the chain
B.take in the chain
C.check up the chain
D.take a strain on the chain
2.單項(xiàng)選擇題In reading a weather map, closely spaced pressure gradient lines would indicate（）.
A.high winds
B.high overcast clouds
C.calm or light winds
D.fog or steady rain
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In the Northern hemisphere northerly winds may cause temperature（）.
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Bales close to the deckhead should be covered to prevent（）.
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Shipboard Emergency Drills must be carried out at least（）on board cargo ship.
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The dew point temperature is（）.
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The mean draft of a ship is the draft（）.
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