A.release
B.absorb
C.develop
D.regenerate
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A.release
B.absorb
C.develop
D.regenerate
A.Refrigerator
B.Refrigerant
C.Cooling medium
D.Brine
A.fan
B.compressor
C.condenser
D.evaporator
A.starting air bottles
B.diesel engines
C.boilers
D.refrigeration compressors
A.below
B.above
C.equal to
D.much larger than
最新試題
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by （）.
The usual symptoms of cavitation in a centrifugal pump is （）.
A salinity indicator is used to determine the （）.
If the thermal bulb of an expansion valve is incorrectly placed at the center of the coil instead of the end, it will （）.
The major source of chemical contaminants in hydraulic fluid is （）.
Low compressor head pressure in a refrigeration system can be caused by（）.
Heavy wear in a particular area of the inner circumference of a packing ring may be caused by （）.