A.central valve
B.radial plunger
C.floating ring
D.cylinder body
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A.moisturizing
B.dehumidification
C.dampening
D.humidification
A.compressor is overloaded
B.motor is overloaded
C.foundation bolts are loose
D.belts are too tight
A.rapidly
B.by gravity
C.through a standard orifice at a specified temperature
D.at a rate of 60cc per second
A.flooding back
B.superheating
C.overflowing
D.recycling
A.Absorb erosion of high velocity discharge stream
B.Seal pump shaft against entry of air
C.Isolate the discharge side from the suction side
D.Dampen the turbulent discharge flow
最新試題
A grease gun is generally used to lubricate a （）.
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）
The usual symptoms of cavitation in a centrifugal pump is （）.
An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by （）.
A salinity indicator is used to determine the （）.
The control mode in which the final control element is moved from one of two flexed positions to the other is known as （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of （）.
A salinity indicator is used to determine the （）.
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.