单项选择题
Which of the following will be desirable properties of refrigerant?() (1) non-explosive (2) non-corrosive (3) that it doesn’t react with lubricants
A.(1), (2) and (3) B.(1) and (2) C.(1) and (3) D.(2) and (3)
In practice, the refrigerant flow after the evaporator ...
单项选择题In practice, the refrigerant flow after the evaporator is designed to ensure that the vapor leaving the evaporator is slightly ().
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