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Refrigerant is circulated through a refrigeration system by the _____.

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refrigerant boiling out of solution from the lube oil  liquid refrigerant flooding the compressor and system  lube oil viscosity being reduced by refrigerant dilution  compressor suction pressure suddenly increasing  
passing it through the expansion valve  condensing refrigerant in the system condenser  passing the gaseous refrigerant through the heat interchanger on the suction sideof the compressor  maintaining a high pressure on the systems receiver  
measure accurately the flow rate of the refrigerant-mass at that point  compress and heat the refrigerant vapor  bring about the evaporation and cooling of refrigerant  exchange heat between the refrigerant and the air at that point  
A/THR1工作;  A/THR2工作;  A/THR1&A/THR2同时工作;  无法确定。  
increase the amount of cooling water to the condenser  decrease the amount of cooling water to the condenser  add more refrigerant to the system  remove some refrigerant from the system  
measure accurately the flow rate of the refrigerant mass at that point  compress and heat the refrigerant vapor  bring about the evaporation and cooling of refrigerant  exchange heat between the refrigerant and the air at that point  
Ala-X-Ser/Thr  Asn-X-Ser/Thr  Asp-X-Ser/Thr  Arg-X-Ser/Thr  Gln-X-Ser/Thr  
flushed with clean refrigerant oil  purged with the refrigerant  washed with an ammonia and alcohol solution  grounded to compressor  
stop the refrigerant from flowing  force the refrigerant to flow  cause the refrigerant pressure to rise  cause the refrigerant pressure to fall  
推力手柄控制ENG且FCU上的A/THR接通灯亮;  推力手柄控制ENG但FCU上的A/THR接通灯不亮;  推力系统控制ENG但FCU上的A/THR接通灯不亮;  推力系统控制ENG且FCU上的A/THR接通灯亮。  
Too much refrigerant  Too little refrigerant  Refrigerant is ran out  Running is over  
measure accurately the flow rate of the refrigerant-mass at that point  compress and heat the refrigerant vapor  bring about the evaporation and cooling of refrigerant  exchange heat between the refrigerant and the air at that point  
increasing refrigerant pressure in the coil  increasing chilled water flow through the cooler  sub-cooling the refrigerant in the condenser  superheating the refrigerant in the compressor  
Proper refrigerant charge  Faulty expansion valve  Insufficient refrigerant  Solenoid valve stuck open  
too much refrigerant in the system  oil entrained in the refrigerant  less than a full charge of refrigerant in the system  ice crystals forming in the refrigerant  
higher boiling temperature for a given pressure than does a pure refrigerant  lower boiling temperature for a given pressure than does a pure refrigerant  boiling pressure equal to that of a pure refrigerant at a given pressure  boiling point will not be affected by entrained oil  
oil  sea water  refrigerant  fresh water  
measure accurately the flow rate of the refrigerant-mass at that point  compress and heat the refrigerant vapor  bring about the evaporation and cooling of refrigerant  exchange heat between the refrigerant and the air at that point  
At the designed operating temperature, the liquid refrigerant charge has changed toa vapor  The liquid refrigerant tends to collect at the bellows or diaphragm and reduces thevalve sensitivity  The sensing bulb is empty of liquid refrigerant charge at the designed operatingtemperature  The sensing bulb is never emptied of liquid refrigerant under normal operatingconditions  
reclaims water  purges air without losing refrigerant  purges air with some loss of refrigerant  purges lube oil from the refrigerant  

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