vaporizes in the condenser
reaches the compressor through the suction line
flashes in the liquid line
condenses in the receiver
第1题：
draw the liquid in；force the liquid out
force the liquid out；draw the liquid in
suction；draw
deliver；outlet
第2题：
a shortage of refrigerant in the system
air in the system
an accumulation of liquid refrigerant in the crankcase
a shortage of oil in the crankcase
第3题：
To add refrigerant to the low side of an air conditioning system, the refrigerant should be introduced through the_______ .
A.suction service valve as a vapor
B.suction service valve as a liquid
C.discharge service valve as a vapor
D.charging valve as a liquid
第4题：
solenoid valve to seize
compressor to hunt
formation of flash gas in the liquid line
expansion valve to freeze open
第5题：
maintain adequate coil back pressure
prohibit flashing in the liquid line
reduce refrigerant volume in the system
reduce compressor discharge line loading
第6题：
Proper refrigerant charge
Faulty expansion valve
Insufficient refrigerant
Solenoid valve stuck open
第7题：
restriction in refrigerant piping
air and non-condensable gases in the condenser
water in the refrigerant
flooding back of liquid refrigerant from the evaporator
第8题：
If the superheat value of a thermostatic expansion valve is set too low, the _.
A.the suction line will be abnormally cold and liquid may slug back to the compressor
B.the suction line will be hot due to a reduced amount of refrigerant returning to the compressor
C.the temperature of the refrigerant within the condenser will remain the same
D.the temperature of the refrigerant passing through the sub-cooler will decrease
第9题：
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
第10题：
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