When adding oil to a refrigeration system, precautions must be taken to ensure that （）.
1、Foaming of the oil in a refrigeration
Foaming of the oil in a refrigeration compressor crankcase is caused by （）.Arefrigerant boiling out of solution from the lube oilBliquid refri...
2、When a refrigeration compressor has de
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.Aincrease the amount...
3、A refrigerant with oil in solution has
A refrigerant with oil in solution has a （）.Ahigher boiling temperature for a given pressure than does a pure refrigerantBlower boiling temper...
4、When you are transferring fuel oil to
When you are transferring fuel oil to the setting tanks, precautions to be observed should include （）Aplugging gooseneck tank vents to prevent...
5、A refrigerant gives up heat when it go
A refrigerant gives up heat when it goes through （）.AcondenserBregurgitateCevaporatorDboil coil
6、When the ship causes oil pollution to
When the ship causes oil pollution to the port, she will be（）.AfinedBleviedCpaidDdeducted