单项选择题
A.bowl periphery B.bowl center C.upper surface D.lower surface
For many years marine centrifuges were designed for （） ...
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
When a clarifier is running the impurities and water co...
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
A centrifuge arranged to separate impurities and small ...
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
