A.refrigerant overcharge
B.overfeeding by the expansion valve
C.a restricted suction strainer
D.due to short cycling of the compressor
您可能感興趣的試卷
你可能感興趣的試題
A.capacity will increase
B.capacity will decrease
C.suction pressure will increase
D.suction pressure will decrease
A.hydraulic
B.electric
C.steam
D.diesel
A.increase the amount of cooling water to the condenser
B.decrease the amount of cooling water to the condenser
C.add more refrigerant to the system
D.remove some refrigerant from the system
A.Heat is given off from a high temperature region known as a heat sink
B.Heat transfer rate is affected most by the size of the heat sink involved
C.Heat transfer rate is affected most by the temperature difference between the heat source and the heat sink
D.Heat transfer by radiation will occur only by mass motion of a fluid substance
A.Maritime Safety Administration
B.Master of the vessel
C.Chief Engineer
D.Chief Mate
最新試題
A salinity indicator is used to determine the ().
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?()
Heavy wear in a particular area of the inner circumference of a packing ring may be caused by ().
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?()
The general purpose of a heat exchanger is to ().
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is ().
If the head pressure of a reciprocating refrigeration compressor is excessive, ().
Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by ().
Thermostatic expansion valves can be adjusted for ().
The major source of chemical contaminants in hydraulic fluid is ().