单项选择题

During working, thermostatic expansion valve should be （）.

A.either all the way open or all the way closed
B.normally fully open
C.throttled depending on load
D.controlled by liquefied pressure

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单项选择题

When the temperature of the refrigerant flowing out from the condenser is below the condensing temperature, it is said to be （）.

A.dry
B.wet
C.super-cooled
D.superheated

单项选择题

The thermal expansion valve controls the amount of refrigerant that is allowed to flow to the （）.

A.compressor
B.cooling coils
C.condenser
D.receiver