单选题The efficiency and output capacity of a low pressure distilling plant will be reduced if the last effect shell （）Apressure does not fluctuate rapidlyBpressure remains steady and unchangedCbrine density does not exceed 1~5Dbrine density is too low
单选题
The efficiency and output capacity of a low pressure distilling plant will be reduced if the last effect shell （）
A
pressure does not fluctuate rapidly
B
pressure remains steady and unchanged
C
brine density does not exceed 1~5
D
brine density is too low
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