单选题In a compression refrigeration plant the refrigerant is under low pressure in the （） and under high pressure in the （）.Acompressor；condenserBcondenser；evaporatorCthrottle valve；evaporatorDevaporator；condenser
单选题
In a compression refrigeration plant the refrigerant is under low pressure in the （） and under high pressure in the （）.
A
compressor；condenser
B
condenser；evaporator
C
throttle valve；evaporator
D
evaporator；condenser
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