海船船员考试

单选题In a compression refrigeration plant the refrigerant flows from the expansion valve and through the () where it absorbs heat from the space being cooled and becomes a gas or vapor.A compressorB condenserC throttle valveD evaporator

题目
单选题
In a compression refrigeration plant the refrigerant flows from the expansion valve and through the () where it absorbs heat from the space being cooled and becomes a gas or vapor.
A

compressor

B

condenser

C

throttle valve

D

evaporator

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相似问题和答案

第1题:

单选题
The latent heat of evaporation is dissipated in the () in a compression refrigeration system.
A

evaporator

B

condenser

C

expansion valve

D

compressor


正确答案: B
解析: 暂无解析

第2题:

单选题
A refrigeration system compressor crankcase is sweating or unusually coldThis is an indication of().
A

a shortage of refrigerant in the system

B

air in the system

C

an accumulation of liquid refrigerant in the crankcase

D

a shortage of oil in the crankcase


正确答案: C
解析: 暂无解析

第3题:

Low compressor head pressure in a refrigeration system can be caused by ___.

A.insufficient condenser cooling water

B.excessive condenser cooling water

C.air in the refrigeration system

D.excessive refrigerant in the system


正确答案:B

第4题:

单选题
In a refrigeration system, the refrigerant absorbs the latent heat of vaporization in the().
A

compressor

B

condenser

C

receiver

D

evaporator


正确答案: D
解析: 暂无解析

第5题:

单选题
The evaporating pressure in R22 vapor compression refrigeration plant should be () atmospheric.
A

below

B

above

C

equal to

D

much larger than


正确答案: A
解析: 暂无解析

第6题:

单选题
A refrigerant boils and vaporizes in the () in a compression refrigeration system.
A

liquid receiver

B

compressor

C

condenser

D

cooling coil


正确答案: A
解析: 暂无解析

第7题:

单选题
The refrigerant flows through the evaporator, where it () heat from the refrigerated space.
A

extracts

B

releases

C

gives no

D

absorbs no


正确答案: B
解析: 暂无解析

第8题:

单选题
Low compressor head pressure in a refrigeration system can be caused by().
A

insufficient condenser cooling water

B

excessive condenser cooling water

C

air in the refrigeration system

D

excessive refrigerant in the system


正确答案: A
解析: 暂无解析

第9题:

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


正确答案: D
解析: 暂无解析

第10题:

单选题
The heat removed from the refrigerant in the condenser of a refrigeration plant is the ()
A

latent heat of expansion

B

sensible heat of condensation

C

heat of compression

D

all of the above


正确答案: C
解析: 暂无解析

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