单项选择题
A.saturated B.super-cooled C.wet D.superheated
The refrigerant flows through the evaporator, where it ...
单项选择题The refrigerant flows through the evaporator, where it （） heat from the refrigerated space.
A.extracts B.releases C.gives no D.absorbs no
After passing through the expansion valve the refrigera...
单项选择题After passing through the expansion valve the refrigerant should be in the state of （）.
A.vapor B.liquid C.solid D.None of the above is tree
The saturation temperature of the refrigerant must be （...
单项选择题The saturation temperature of the refrigerant must be （） that required in the evaporator refrigerated space.
A.above B.below C.equal to D.None of the above
