A.kg
B.MPa
C.meter fluid column
D.None of the above is true
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A.reciprocating pumps
B.positive displacement pumps
C.centrifugal pumps
D.centripetal pumps
A.depending on
B.in relative to
C.regardless of
D.because of
A.variable stroke pumps
B.multistage pumps
C.positive displacement pumps
D.triple-ported pumps
A.positive displacement
B.ejector
C.centrifugal
D.air compressor
A.reciprocating pump
B.positive displacement pump
C.centrifugal pump
D.centripetal pump
最新試題
The general purpose of a heat exchanger is to （）.
The major source of chemical contaminants in hydraulic fluid is （）.
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
Thermostatic expansion valves can be adjusted for （）.
Heavy wear in a particular area of the inner circumference of a packing ring may be caused by （）.
Which of the listed pumps is NOT a positive displacement pump?（）
If the thermal bulb of an expansion valve is incorrectly placed at the center of the coil instead of the end, it will （）.
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 （）.