搜题

【单项选择题】

In diesel engineering practice, the term used to express the ignition quality of a particular fuel is（）

A、A.cetane number

B、B.octane number

C、C.ignition index number

D、D.volatility point

查看正确答案

更多“In diesel engineering practice, the term used to express the ignition quality of a particular fuel is（）”相关的问题

第1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

点击查看答案

第2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

点击查看答案

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

点击查看答案

第4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

点击查看答案

第5题

[单选题] Injection lag in a diesel engine may be caused by（）

A、a higher cetane number of fuel oil B、the diesel fuel used having a high viscosity C、mechanical rigidity in the lube pump mechanism D、a decrease rigidity in the fuel pump delivery pressure

点击查看答案

第6题

[单选题] After the ship is out of the harbour and in “Full Speed”, well change （）.

A、to fuel oil instead of diesel oil B、for fuel oil instead of diesel oil C、to diesel oil into fuel oil D、for diesel oil into fuel oil

点击查看答案

第7题

[] Duty officer informs us that the vessel is out of harbor and in “Full Ahead”We are going to run （）.

A、A.diesel oil instead of fuel oil B、B.fuel oil instead of diesel oil C、C.diesel oil instead fuel oil D、D.fuel oil instead diesel oil

点击查看答案

第8题

[单选题] What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）

A、Spark plug B、Heat of compression C、Carburetor D、Glow ping

点击查看答案

第9题

[单选题] Dirt in the fuel oil system of a diesel engine can cause （）.

A、clogged filters B、poor combustion C、overloading of the diesel D、shock of fuel lines

点击查看答案

第10题

[单选题] An increase in the air inlet manifold pressure of a diesel engine will result in a/an （）.

A、decrease in maximum cylinder pressure B、increase in ignition lag C、decrease in fuel consumption per horsepower-hour D、decrease in exhaust manifold pressure

点击查看答案

账号：登录

答题记录

我的收藏

我的题库

客服

TOP

请使用微信扫码支付

订单号：
遇到问题请联系在线客服