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单选题
One of the functions of ventilation is to （） the humidity of spaces containing sources of moisture, or to （） the temperature of spaces not mechanically cooled such as the engine room.
A
increase；reduce
B
reduce；increase
C
increase；increase
D
reduce；reduce
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单选题Which of following functions is not one of the functions of air conditioner?（）A
refreshing the airB
making person upsetC
adjusting the air humidityD
adjusting the air temperature
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