题目内容

The refrigerant entering the evaporator coil, at a temperature( )than that of thesurrounding secondary coolant ( air or brine) receives latent heat and( )

A. higher; condenses
B. lower; evaporates
C. lower; compresses
D. higher; evaporates

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The dew point of air is reached when the wet bulb temperature is( )

A. twice the dry bulb temperature
B. 10°C above the dry bulb temperature
C. 5° C above the dry bulb temperature
D. equal to the dry bulb temperature

The dew point is reached when the wet bulb temperature is( )

A. equal to the dry bulb temperature
B. twice the dry bulb temperature
C. less than the dry bulb temperature
D. 50 C above the dry bulb temperature

The device, which is installed in the compressor suction line to prevent liquid from entering the compressor when hot gas defrosting, is called a( )

A. re-vaporator
B. receiver
C. dehydrator
D. solenoid

( )for cargo spaces and living spaces are normally based on a given number of air changesper hour.

A. Ventilation requirements
B. Air-conditioning
C. Air requirement
D. Air quality

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