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【单选题】

A large two-stroke/cycle direct reversing diesel engine is to be reversedPrior to the admission of starting air you must ()

A、line up the engine fore restarting with light diesel oil

B、reposition the fuel injection cam

C、change the intake and exhaust valve cam positions

D、place the starting cam in the intermediate position

更多“A large two-stroke/cycle direct reversing diesel engine is to be reversedPrior to the admission of starting air you must ()”相关的问题
第1题

Aa two-stroke engine works without exhaust operation  B、a two-stroke engine works without compression stroke  Ca two-stroke engine works without expansion stroke  D、a two-stroke engine works without suction operation  

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第2题

Atwo crankshaft revolutions in a two-stroke/cycle engine  B、two power strokes in a two-stroke/cycle engine  C、one power stroke in a two-stroke/cycle engine  D、two piston strokes in a two-stroke/cycle engine  

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第3题

Aa two-stroke engine can’t work without cylinders  B、a two-stroke engine can’t work without pistons  Ca two-stroke engine can’t work without crankshafts  D、a two-stroke engine can’t work without a blower  

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第4题

A、In a two-stroke/cycle engine, the rings run hotter, requiring the end gap to be greater  B、Some provision must be made in a two-stroke/cycle engine to keep the rings from binding in the ports  C、No gap is required to exist between the ends of the ring when cold in a two-stroke/cycle engine, but a small gap is required in a four-stoke/cycle engine  D、The gaps should be staggered on either side of a piston in a two-stroke/cycle engine, while staggering is not necessary in a four-stroke/cycle engine  

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第5题

A、one half crankshaft speed in a two-stroke cycle diesel engine  B、crankshaft speed in a two-stroke cycle diesel engine  Ctwo times crankshaft speed in a two-stroke cycle diesel engine  D、one-fourth times crankshaft speed in a four-stroke cycle diesel engine  

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第6题

Aa single, long-stroke, slow-speed, turbocharged, two-stroke diesel engine  B、a single, long-stroke, medium-speed, turbocharged, four-stroke diesel engine  Ctwo medium-speed, turbocharged, four-stroke diesel engines  D、a variable-speed AC generator  

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第7题

A、bearing pressure in a four-stroke\cycle acting single diesel engine is continually reversed  B、bearing pressure in a two-stroke\cycle single acting diesel engine is continually reversed  C、the maximum bearing pressure is higher in a single acting two-stroke/cycle diesel engine  D、two-stoke/cycle diesel engines require more complicated lubrication piping  

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第8题

A、most critical in a four-stroke cycle diesel engine  B、most critical in a two-stroke/cycle diesel engine  C、most critical in a four-stroke/cycle diesel engine if it is turbocharged  D、of equal importance in a two-stroke/cycle diesel engine as in a four-stroke/cycle diesel engine  

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第9题

A、has little or no internal friction  B、has a lower effective compression ratio  C、operates with scavenge air under a positive pressure  D、operates without energy absorbing intake and exhaust strokes  

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第10题

A、power and intake  B、intake and exhaust  C、exhaust and compression  D、compression and power  

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