单项选择题
A re-heater, as used in an air conditioning system, is designed to control the （）
A.chilled water temperature
B.dew point temperature
C.primary air temperature
D.dry bulb temperature
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相关考题
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单项选择题
Which of the following methods is normally used to control the temperature of air distributed from individual cooling coils in an air conditioning system using a chilled water circulation system?（）
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 （）.
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 （）
A.changing the air filter
B.recharging the system
C.changing compressor lubricant
D.renewing container vacuum
