单项选择题
The purpose of the low pressure cut-out switch is to （）.
A.maintain liquid refrigerant at the suction of the compressor
B.maintain a preset suction pressure to the compressor
C.start and stop the compressor at preset operating pressures
D.operate at minimum efficiency
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相关考题
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单项选择题
The process of boiling seawater in order to separate it into freshwater vapor and brine is usually defined as （）.
A.dehydration
B.condensation
C.evaporation
D.dissolution -
单项选择题
In the production of freshwater from seawater through a process of heating and cooling, the cooling phase of production is usually called （）.
A.evaporation
B.distillation
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单项选择题
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
