A.decrease
B.increase
C.decrease to zero
D.remain unchanged
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A.purge lube oil from the liquid refrigerant
B.recover water purged from the system
C.separate foul gases from the receiver
D.purge non-condensable gases without losing refrigerant
A.chilled water temperature
B.dew point temperature
C.primary air temperature
D.dry bulb temperature
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
A.increase
B.decrease
C.remain unchanged
D.be greatest at dew point
A.changing the air filter
B.recharging the system
C.changing compressor lubricant
D.renewing container vacuum
最新試題
The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
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One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
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