A.drain water from the air receiver
B.drain water from the cylinders
C.delay the compression process until the motor is up to speed
D.check pump alignment
您可能感興趣的試卷
你可能感興趣的試題
A.face shield
B.a respirator
C.rubber gloves
D.an all purpose gas mask
A.lantern rings
B.bearings
C.easing volutes
D.wearing rings
A.packing gland
B.mechanical seals
C.lantern rings
D.wearing rings
A.through a detachable hose connection
B.after passing through an activated charcoal filter
C.after chemical analysis shows it is fit for consumption
D.through a solenoid operated three-way valve
A.worn gland sealing shaft
B.worn wearing rings
C.a bent shaft
D.reversed pump coupling
最新試題
A salinity indicator is used to determine the （）.
The major source of chemical contaminants in hydraulic fluid is （）.
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
Which of the following statements is correct concerning heat transfer?（）
An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
The rate of heat transfer from a hot region to a cold region is affected most by the （）.
Which of the listed pumps is NOT a positive displacement pump?（）
When the steering gear is in operation, you should （）.