The purpose of the refrigeration system low pressure cutout switch is to （）<br>A:protect the compressor from liquid flood back<br>B:protect the compressor from low discharge pressure<br>C:start and stop the compressor upon system demand<br>D:start the compressor after a drop in the evaporator pressure

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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