Refrigerant is normally sub-cooled in a refrigeration or air conditioning system condenser to （）.
1、Chafing gear is normally used（）.
Chafing gear is normally used（）.Afor portable fendersBfor ground tackleCon the inside of the hawsepipeDon mooring line
2、Refrigerant is circulated through a re
Refrigerant is circulated through a refrigeration system by the （）.AcompressorBcondenserCexpansion valveDevaporator
3、What normally helps in detecting escap
What normally helps in detecting escaping gas? （）ARunning hand along pipeBRed flameCOdorDIncrease the line pressure
4、Normal pool elevation is the height in
Normal pool elevation is the height in feet of the section of river above a dam. This height is measured from（）.Alow steel on the Huey P. Long BridgeBmean sea levelCthe local water tableDthe minimum dam control level
5、Instruction Register (IR) is normally
Instruction Register (IR) is normally used to point outAThe address of next execution instructionBThe address of last execution instructionCThe current execution instructionDNone of above
6、The temperature of the refrigerant in
The temperature of the refrigerant in the evaporator coil depends mostly upon the （）.Arefrigerant pressure in the evaporatorBcooling water temperature to the condenserCheat load in the refrigerator compartmentDsolenoid valve in the liquid line