单项选择题
A.stores liquid refrigerant B.collects non-condensable gases C.allows refrigerant sub-cooling D.prevents compressor surging
The purpose of the refrigeration system low pressure cu...
单项选择题The purpose of the refrigeration system low pressure cutout switch is to （）
A.protect the compressor from liquid flood back B.protect the compressor from low discharge pressure C.start and stop the compressor upon system demand D.start the compressor after a drop in the evaporator pressure
A pressure drop in the liquid line of a refrigeration s...
单项选择题A pressure drop in the liquid line of a refrigeration system may cause（）
A.the solenoid valve to seize B.the compressor to hunt C.flash gas to form in the liquid line D.the expansion valve to freeze open
In a direct expansion type multi-box refrigeration syst...
单项选择题In a direct expansion type multi-box refrigeration system, the compressor is set up to cycle on and off by the（）
A.pressurestat B.high pressure cutout C.solenoid valve D.low pressure cutout switch
