A.purifying
B.batch
C.long period
D.temporary
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A.center
B.periphery
C.inlet
D.upper parts
A.an oily water separator
B.a purifier
C.a centrifugal compressor
D.a clarifier
A.an oily water separator
B.a purifier
C.a centrifugal compressor
D.a clarifier
A.air
B.black oil
C.water
D.ice cream
A.rather than
B.other than
C.in addition that
D.except for
最新試題
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
If the suction pressure at the refrigeration compressor is below normal, the cause can be（）.
Heavy wear in a particular area of the inner circumference of a packing ring may be caused by （）.
A salinity indicator is used to determine the （）.
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.
A grease gun is generally used to lubricate a （）.
The temperature differential occurring between the inlet temperature of the fluid to be cooled and the outlet temperature of the cooling medium in a shell-and-tube heat exchanger is greatest in which of the flow designs listed?（）
The output volume of a positive fixed displacement pump can be changed only by （）.
Which of the following statements is correct concerning heat transfer?（）
Which of the listed pumps is NOT a positive displacement pump?（）