A.a stuck solenoid valve
B.a shortage of refrigerant
C.too much oil in circulation
D.too much superheat
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A.trick-wheel
B.follow-up control
C.six-way valve
D.Rapson slide
A.stress
B.strain
C.shear strength
D.ultimate tensile strength
A.increase discharge pressure
B.decrease pump capacity
C.decrease pump cavitation
D.decrease reaction ring clearance
A.too much superheat
B.insufficient superheat
C.suction pressure too low
D.excessive refrigerant returning to the compressor
A.Needle
B.Tapered roller
C.Roller
D.Ball
最新試題
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
When the steering gear is in operation, you should （）.
A salinity indicator is used to determine the （）.
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Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
A salinity indicator is used to determine the （）.
Which of the following statements is correct concerning heat transfer?（）
If the suction pressure at the refrigeration compressor is below normal, the cause can be（）.