单项选择题

If the discharge valves on a refrigeration compressor are leaking badly, the compressor should （）.

A.run continuously
B.not start
C.have high discharge pressure
D.short cycle on the high pressure switch

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单项选择题

A.Electrical energy
B.Thermal energy
C.Potential energy
D.Kinetic energy

单项选择题

A.sliding block
B.pintle
C.reaction ring
D.tilting box or swash plate

单项选择题

A.overfeeding of the expansion valve
B.damage to the condenser
C.constant running of the compressor
D.flooding of the receiver