单项选择题
In the condenser, the hot, high pressure refrigerant gas is cooled by the sea water and becomes（）.
A.fresh water
B.vapor
C.mixture
D.liquid
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相关考题
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单项选择题
The boiling and condensation points of a refrigerant depend on the （） exerted upon it.
A.temperature
B.pressure
C.velocity
D.heat -
单项选择题
Faulty operation of any system is indicated by very definite （）.
A.symptoms
B.samples
C.traces
D.tracks -
单项选择题
The refrigerating agent can （） at low temperature in the evaporator.
A.expand
B.evaporate
C.condense
D.distil
