A.Height of the machine
B.Temperature of the liquid seal
C.Gravity disc
D.Bowl diameter
您可能感興趣的試卷
你可能感興趣的試題
A.system is overcharged with refrigerant
B.system is low on refrigerant
C.discharge valves are leaking excessively
D.discharge valves are leaking slightly
A.decrease
B.increase
C.decrease to zero
D.remain unchanged
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
最新試題
The main purpose of port State control is not to（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
The cetane rating of diesel fuel is an indication of the （）
Cold weather starting of a diesel engine may be made easier by（）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
Which of the following items don’t belong to dock repair works?（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）