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Which of the processes listed would be the most satisfactory method to use to lower the humidity of the air being circulated by an air conditioning system?（）
A:Cooling the air to a temperature just above dew point
B:Heating the air to a point at which moisture will boil off ,then re-cooling it
C:Cooling the air to a point below dew point, then reheating it
D:Heating the air and then cooling it to a point below dew point

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出自：海船船员证

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