单项选择题

The energy associated with molecules is known as （）.

A.kinetic energy
B.potential energy
C.mechanical energy
D.thermal energy

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单项选择题

A.vaporizes in the condenser
B.reaches the compressor through the suction line
C.flashes in the liquid line
D.condenses in the receiver

单项选择题

A.heat
B.power
C.horsepower
D.foot-pound

单项选择题

A.worn bearings and piston pins
B.slugging due to flooding back
C.too much oil in circulation
D.All of the above