单选题The sensing line for the low pressure cutout switch to a refrigeration system is located （）.Ain the chill boxBbefore the receiverCon the suction side of the compressorDon the discharge side of the compressor
单选题
The sensing line for the low pressure cutout switch to a refrigeration system is located （）.
A
in the chill box
B
before the receiver
C
on the suction side of the compressor
D
on the discharge side of the compressor
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