单项选择题
For many years marine centrifuges were designed for （） operation, that is the machines were run for a period during which solids accumulated in the bowlThe machine was stopped when the accumulated solids began to impair its performance.
A.purifying
B.batch
C.long period
D.temporary
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相关考题
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单项选择题
When a clarifier is running the impurities and water collect at the bowl （）.
A.center
B.periphery
C.inlet
D.upper parts -
单项选择题
A centrifuge arranged to separate impurities and small amounts of water from oil is known as （）.
A.an oily water separator
B.a purifier
C.a centrifugal compressor
D.a clarifier -
单项选择题
A centrifuge arranged to separate two liquids is known as （）.
A.an oily water separator
B.a purifier
C.a centrifugal compressor
D.a clarifier
