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单选题 Sediment collects in a tubular purifier ____________
学科：轮机英语
时间：2023-05-25 04:56:08
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题目1单选题
______ fuel oils ______ lubricating oils require treatment before passing to the engineA. Both/andB. Neither/norC. Either/orD. Both/or
题目2单选题
Dirty oil must ________ before being used again.A. washB. loosenC. be mixedD. be purified
题目3单选题
Dirty oil must be ________ before being used again.A. mixed with clean oilB. purifiedC. heatedD. strained
题目4单选题
Factor influencing the position of the interface between the liquid seal and the oil in a purifier is __________A. throughputB. back pressureC. gravity discD. None of the above is wrong
题目5单选题
High-speed rotating in a centrifugal purifier can produce a force __________ larger than the force of gravityA. many thousand timesB. between timesC. one timeD. at times
题目6单选题
In a purifier changing to a gravity disc with larger hole diameter will move the interface towards the _________A. bowl peripheryB. bowl centerC. upper surfaceD. lower surface
题目7单选题
In a purifier, the interface between the liquid seal and the oil should be positioned as close as possible to ____________A. the outlet of oilB. the outlet of waterC. the bowl peripheryD. the center of bowl
题目8单选题
Sediment collects in a tubular purifier ____________A. on top coverB. on sides of bowlC. the bearing strengthD. the bridge hardness
题目9单选题
The cleaned heated oil, after passing through the centrifuges, is to be pumped to a _______A. settling tankB. service tankC. ballast tankD. drain tank
题目10单选题
The diameter of the gravity disc is too big. It causes oil to flow through the water outlet. We changed the disc and no _______ is found in the water outletA. waterB. oilC. scaleD. ridge
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