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0n a vesel proceeding from a very cold to a warm climate with a cargo of a nonhygroscopic nature in the holds, which is true?（）.
A:Danger of heavy ship sweat exists; constant and vigorous ventilation is required
B:There is danger of heavy cargo sweat if outside air is introduced by ventilation
C:There is little danger of ships sweat, slight possibility of cargo sweat; moderate ventilation is needed
D:The po sibility of any sweat problem, either cargo or ship, is frame

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出自：海船船员证

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