单项选择题
As the amount of moisture in the air increases, the difference between the dry bulb and wet bulb temperature will （）.
A.increase B.decrease C.remain unchanged D.be greatest at dew point
单项选择题 Routine maintenance on a Central Control Room hermetically sealed air conditioning unit should include （）
单项选择题 In an air conditioning system, moisture is removed from the air by（）
单项选择题 A lower thermostatic temperature setting will provide a desired degree of comfort in a room where （）
