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单选题
Which of the following terms represents the form of heat removed from the refrigerant in the condenser of a refrigeration system?（）
A
Latent heat of vaporization
B
Heat of compression
C
Superheat
D
All of the above
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Control the amount of lube oil burned in the combustion chamberB
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单选题Which of the following statements is correct concerning heat transfer?（）A
Heat is given off from a high temperature region known as a heat sinkB
Heat transfer rate is affected most by the size of the heat sink involvedC
Heat transfer rate is affected most by the temperature difference between the heat source and the heat sinkD
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Conduction of heat to adjacent surfacesB
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Case fanB
Thermal compoundC
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Suction headB
Pump headC
Discharge headD
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Degree of saturationB
Saturation temperatureC
Superheated temperatureD
Degree of superheat
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Non-harmonic speedB
Critical speedC
Maximum speedD
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The heat is supplied by human bodies only.B
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HeatsinkB
FanC
Liquid coolingD
Compressed air
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