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单选题
The refrigerant leaves the evaporator of a refrigeration system as a low pressure （）.
A
sub-cooled liquid
B
high temperature liquid
C
oil saturated liquid
D
superheated vapor
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too much refrigerant in the systemB
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condensing refrigerant in the system condenserC
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单选题Because the expansion valve is just （） way open, the refrigerant is under low pressure in the evaporator.A
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fewC
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belowC
equal toD
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condenserC
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high evaporator superheat
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单选题While troubleshooting a refrigeration system for low head pressure, liquid refrigerant flooding back from the evaporator is determined to be the causeIt may be necessary to （）.A
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clean the waterside of the condenser
考题
单选题In practice, the refrigerant flow after the evaporator is designed to ensure that the vapor leaving the evaporator is slightly （）.A
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单选题Which of the listed refrigeration system components keeps the refrigerant circulating through the system?（）A
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