A.rise
B.fall
C.be maintained constant
D.None of the above is true
您可能感興趣的試卷
你可能感興趣的試題
A.raised
B.risen
C.reduced
D.maintained constant
A.humidity
B.dry
C.steam
D.oil
A.condenser
B.regurgitate
C.evaporator
D.boil coil
A.liquid receiver
B.compressor
C.condenser
D.cooling coil
A.evaporator
B.condenser
C.expansion valve
D.compressor
最新試題
The general purpose of a heat exchanger is to （）.
Low compressor head pressure in a refrigeration system can be caused by（）.
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.
If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should （）.
The output volume of a positive fixed displacement pump can be changed only by （）.
Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by （）.
Which of the following statements is correct concerning heat transfer?（）
The major source of chemical contaminants in hydraulic fluid is （）.