单选题A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）Apurge lube oil from the liquid refrigerantBrecover water purged from the systemCseparate foul gases from the receiverDpurge non-condensable gases without losing refrigerant
单选题
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
A
purge lube oil from the liquid refrigerant
B
recover water purged from the system
C
separate foul gases from the receiver
D
purge non-condensable gases without losing refrigerant
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