A.compressor
B.condenser
C.expansion valve
D.evaporator
您可能感興趣的試卷
你可能感興趣的試題
A.bimetallic type
B.diaphragm type
C.bourdon tube type
D.resistance-temperature type
A.evaporator coils
B.liquid strainer
C.compressor
D.condenser
A.suction side of a bilge pump
B.exhaust manifold of an auxiliary diesel
C.discharge line from an air compressor
D.chemical feed tank of an evaporator
A.They should always be started with the discharge valve closed
B.They should always be started with the discharge valve opened
C.A priming pump is always required to flood the impeller suction
D.They should always be started with the sealing line valves closed
A.compressor damage from improper lubrication
B.refrigerant absorption by the lubricant
C.increased viscosity in the lubricant
D.carbon deposit on the compressor suction valves
最新試題
The output volume of a positive fixed displacement pump can be changed only by （）.
The major source of chemical contaminants in hydraulic fluid is （）.
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
A salinity indicator is used to determine the （）.
Low compressor head pressure in a refrigeration system can be caused by（）.
Which of the listed pumps is NOT a positive displacement pump?（）
One cause of high head pressure occurring in a refrigeration system can be （）.
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
Which of the following statements is correct concerning heat transfer?（）