The world's first lubricating oil was from petrochemical sources.
错误
举一反三
- _____ is arranged for cleaning the lubricating oil in the system and clean oil can be provided from a storage tank.
- The lubricating oil is pumped from the drain tank， very often with （） in the suction line.
- How much oil does the Middle East produce today A: most of the world's oil supplies. B: 2/3 of the world's oil supplies. C: 1/3 of the world's oil supplies. D: 1/4 of the world's oil supplies.
- When the cited information comes from different sources, the in-text reference should include all the sources.
- In the lubricating oil system of the main engine, the function of _____ is to adjust the amount of lubricating oil entering the lubricating oil cooler according to the temperature of the lubricating oil. A: self cleaning filter B: lubrication oil pump C: three-way valve D: by-pass filter
内容
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8、The oil pump in the lubricating system（ ） oil from the oil pan and sends it to all working parts in the engine. A: . domestic B: external C: internal D: draws
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lubricating oil
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For large two-stroke diesel engine, the lubricating oil required for cross head bearing lubrication comes from the_____. A: settling tank B: lubricating oil circulation tank C: Wet sump D: Daily service tank
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The in the lubricating system draws oil from the oil pan and sends it to all working parts in the engine. A: fuel pump B: oil pump C: diesel pump D: gasoline pump
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The lubricating system for the cylinder walls is different from the bearings in that the oil for former one is supplied in （） while that for latter one is （）.