Thermal expansion of solid is ______ detected by our naked eyes.A.small so as not beB.so s
Thermal expansion of solid is ______ detected by our naked eyes.
A.small so as not be
B.so small as not be
C.so small as not to be
D.such small as not to be
Thermal expansion of solid is ______ detected by our naked eyes.
A.small so as not be
B.so small as not be
C.so small as not to be
D.such small as not to be
For example: The hardness of ceramics is greater than metals. Thus, the comparison is expressed as ceramics > metals. (2pts)
Thermal expansion: A)
From the above comparison, B) ______ have the lowest CTE and C) ______ have the weakest bonding forces among the aforementioned materials.
A.Condenser and thermal expansion valve
B.King and solenoid valves
C.Compressor and thermal expansion valve
D.Condenser and solenoid valve
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
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
A) Heat capacity
B) Specific heat
C) Thermal conductivity
D) Coefficient of thermal expansion
When a refrigeration compressor is in the ‘off’ cycle, the thermal expansion valve will .
A.always be wide open when the compressor restarts
B.continue to operate as if the system were in operation
C.remain open until evaporator pressure equalizes, then close until the compressor restarts
D.always be completely closed until the compressor restarts
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