你可能感興趣的試題

Before the sludge in a purifier is ejected,（）

A.the oil feeding is stopped and replaced by admitting flushing water
B.the flushing water feeding is stopped and replaced by admitting oil
C.the feeding of dirty oil and flushing water is stopped
D.the feeding of dirty oil and flushing water is admitted

單項(xiàng)選擇題

A centrifuge of which the bowl is arranged as the upper and lower parts separate discharges the sludge（）

A.by opening the separator manually
B.by separating the lower part from the upper part automatically
C.by separating the upper part from the lower part automatically
D.continuously

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A flash-type evaporator discharges heated seawater into a chamber that is maintained at a pressure than the vapor pressure of the entering heated seawater, and subsequently the flashed water vapor thereby produced（）

你可能感興趣的試題

Before the sludge in a purifier is ejected,（）

A centrifuge of which the bowl is arranged as the upper and lower parts separate discharges the sludge（）