单项选择题
A.A room thermostat activates an electric heater at each individual chilled air outlet when necessary
B.Varying the number of passes the air makes across the coils
C.Varying the temperature of the water through the coils
D.Varying the quantity of water flowing through the coils
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 （）.
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（）