单选题The thermal expansion valve reacts directly to the （）Atemperature in the space being cooledBliquid refrigerant pressure at the solenoid valveCpressure drop across the evaporator coilsDrefrigerant gas superheat at the coil outlet
单选题
The thermal expansion valve reacts directly to the （）
A
temperature in the space being cooled
B
liquid refrigerant pressure at the solenoid valve
C
pressure drop across the evaporator coils
D
refrigerant gas superheat at the coil outlet
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单选题The bulb for the thermal expansion valve is located（）Ain the middle of evaporator coilsBnear the evaporator coil outletCnear the evaporator coil inletDon the bottom row of evaporator coils
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单选题When the heat load begins to increase, the needle valve of an expansion valve will（）Amove in an opening directionBmove in a closing directionCeither open or closeDnot move at all
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单选题A cracked diaphragm in a thermostatic expansion valve will cause the valve to （）.Areturn to a neutral positionBflood the evaporatorCopenDclose
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