单选题Air that may enter a refrigeration plant tends to collect in the （）.Aupper part of the receiverBupper part of the condenserCdown stream end of the cooling coilDoutlet end of the condenser
单选题
Air that may enter a refrigeration plant tends to collect in the （）.
A
upper part of the receiver
B
upper part of the condenser
C
down stream end of the cooling coil
D
outlet end of the condenser
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