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【单选题】

Marine four-stroke diesel engines are mainly ().

A、of crosshead type

B、of trunk piston type

C、of low speed type

D、all the above

更多“Marine four-stroke diesel engines are mainly ().”相关的问题
第1题

A、The direction of pressure on the journal in four-stroke engine is continuously  B、positive feed lubricators are installed on all bearings of four-stroke engine, whereas as a splash feed system is used on tow-stroke engine  C、four-stroke engines usually utilize a heavier grade of oil than tow-stroke engines  D、Low-stroke engines usually consume less lube oil than four-stroke engines  

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第2题

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

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第3题

A、Four-stroke  B、Two-stroke  C、Electronic ignition  D、Forced exhaust  

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第4题

A、the same indicated horsepower as a four-stroke/cycle engine  B、twice the indicated horsepower as a four-stroke/cycle engine  C、one half indicated horsepower as a four-stroke/cycle engine  D、one power stroke for every two crankshaft revolutions  

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第5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6题

A、after TDC  B、before TDC  C、after BDC  D、before BDC  

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第7题

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

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第8题

A、Intake stroke  B、Compression stroke  C、Exhaust stroke  D、Pumping stroke  

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