As the refrigerant passes through the valve orifice, its pressure is reduced and part of the refrigerant turns into （）.

A、A.liquid

B、B.oily mixture

C、C.emulsion

D、D.vapor

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更多“As the refrigerant passes through the valve orifice, its pressure is reduced and part of the refrigerant turns into （）.”相关的问题

第1题

[单选题] To add refrigerant to the high side of an air conditioning system, you should introduce the refrigerant through the （）.

A、discharge service valve as a vapor  B、suction service valve as a liquid  C、charging valve as a liquid  D、condenser purge valve as a vapor  

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第2题

[单选题] To add refrigerant to the low side of an air conditioning system, the refrigerant should be introduced through the （）

A、suction service valve as a vapor  B、suction service valve as a liquid  C、discharge service valve as a vapor  D、charging valve as a liquid  

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第3题

[单选题] If a refrigeration compressor is running continuously without lowering temperature as normal in the refrigerator, the trouble may be （）.

A、excessive condenser cooling water  B、warm food in the refrigerator  C、a shortage of refrigerant  D、s shortage of compressor oil  

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第4题

[] When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.

A、A.increase the amount of cooling water to the condenser  B、B.decrease the amount of cooling water to the condenser  C、C.add more refrigerant to the system  D、D.remove some refrigerant from the system  

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第5题

[单选题] The principal purpose of sub-cooling liquid refrigerant prior to its entering the expansion valve is to （）.

A、increase the refrigerating effect, by decreasing the amount of flash gas  B、allow the refrigerant to enter the throttling device in a saturated condition  C、increase the refrigerating effect by increasing the amount of flash gas  D、minimize the temperature drop of the liquid as it passes through the solenoid valve to the outlet side  