单选题The purpose of the refrigeration system low pressure cutout switch is to （）Aprotect the compressor from liquid flood backBprotect the compressor from low discharge pressureCstart and stop the compressor upon system demandDstart the compressor after a drop in the evaporator pressure
单选题
The purpose of the refrigeration system low pressure cutout switch is to （）
A
protect the compressor from liquid flood back
B
protect the compressor from low discharge pressure
C
start and stop the compressor upon system demand
D
start the compressor after a drop in the evaporator pressure
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