单项选择题

Refrigerant is circulated through a refrigeration system by the （）.

A.compressor
B.condenser
C.expansion valve
D.evaporator

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单项选择题

The type of gauge most commonly used to measure pressure is the （）.

A.bimetallic type
B.diaphragm type
C.bourdon tube type
D.resistance-temperature type

单项选择题

When refrigerant leaves the receiver, it flows next on to the （）.

A.evaporator coils
B.liquid strainer
C.compressor
D.condenser

单项选择题

A compound gauge is typically installed on the （）.

A.suction side of a bilge pump
B.exhaust manifold of an auxiliary diesel
C.discharge line from an air compressor
D.chemical feed tank of an evaporator