A.negative displacement type
B.turbine type
C.positive displacement type
D.mixed-flow type
您可能感興趣的試卷
你可能感興趣的試題
A.well ventilated
B.well clean
C.in good order
D.more room
A.lower
B.higher
C.the lower
D.the higher
A.evaporation
B.frosting
C.condensing
D.compressing
A.consume
B.distill
C.run
D.operate
A.bottom
B.top
C.center
D.periphery
最新試題
A salinity indicator is used to determine the （）.
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 （）.
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?（）
The major source of chemical contaminants in hydraulic fluid is （）.
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.
Which of the listed pumps is NOT a positive displacement pump?（）
The control mode in which the final control element is moved from one of two flexed positions to the other is known as （）.
A grease gun is generally used to lubricate a （）.
An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.
A pressure drop through the refrigerant liquid line may cause （）.