單項選擇題

The thermal expansion valve responds to the（）

A.amount of superheat in the vapor leaving the coil
B.amount of superheat in the liquid
C.temperature in the evaporator coils
D.pressure in the evaporator coils

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單項選擇題

The thermostatic valve has a throttling action, that is to say the valve can（）

A.stop the refrigerant from flowing
B.force the refrigerant to flow
C.cause the refrigerant pressure to rise
D.cause the refrigerant pressure to fall

單項選擇題

When the refrigeration demand is small,（）

A.the expansion valve will move toward the wide open position
B.the expansion valve will move toward the closing position
C.the feeler bulb will conveys the high temperature
D.the superheat degree will raise

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The thermal expansion valve responds to the（）

你可能感興趣的試題

The thermostatic valve has a throttling action, that is to say the valve can（）

When the refrigeration demand is small,（）