A diesel engine emits blue exhaust smoke as a result of（）

A、cold intake air

B、excessive compression pressure

C、excessive cylinder lubrication

D、a light load

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更多“A diesel engine emits blue exhaust smoke as a result of（）”相关的问题

第1题

[单选题] （）, so they are widely used on board ship nowadays.

A、Diesel engines have more advantages in comparison with gasoline engines B、Diesel engines have more advantages in comparison to gasoline engines C、Gasoline engines have more advantages in comparison with diesel engines D、Gasoline engines have more advantages in comparison to diesel engines

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第2题

[单选题] The size of the exhaust valve opening is （）

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3题

[单选题] Proper lubrication of the main bearing is more easily obtained in a single acting four-stroke/cycle diesel engine than in a single acting two-stroke/cycle diesel engine because （）

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4题

[单选题] According to the relevant regulation, lifeboat should be powered by（）.

A、inboard diesel engine B、outboard diesel engine C、outboard gasoline engine D、inboard gasoline engine

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第5题

[单选题] （）are increasingly used as main engine on merchant vessels, because they have a high Hp/Weight ratio.

A、Slow speed diesel engines B、Medium-speed diesel engines C、Steam engines D、Gasoline engines

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第6题

[单选题] A supercharged diesel engine when compared to a similar naturally aspirated diesel engine, will develop an increase in （）

A、ignition lag B、engine horsepower C、lube oil system pressure D、specific fuel consumption

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第7题

[单选题] The camshaft drive is designed to maintain proper camshaft speed relative to crankshaft speedIn maintaining this relationship, the camshaft drive causes the camshaft to rotate at（）

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