海船船员考试

单选题Prior to starting most medium-speed propulsion diesel engines, which of the procedures listed should be observed?（）A The expansion tank should be topped offB The thermostatic water regulating valves should be manually openedC The fuel filters should be

题目
单选题
Prior to starting most medium-speed propulsion diesel engines, which of the procedures listed should be observed?（）
A

The expansion tank should be topped off

B

The thermostatic water regulating valves should be manually opened

C

The fuel filters should be changed

D

The engine should be turned over slowly with the indicator cocks open

参考答案和解析
正确答案： A
解析： 暂无解析
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相似问题和答案

第1题：

单选题
Stating a large propulsion diesel engine using diesel fuel during cold weather conditions can be made easier by （）
A

increasing the quantity of starting air

B

increasing the lube oil pressure

C

heating the engine fuel supply

D

heating the engine jacket water


正确答案： A
解析： 暂无解析

第2题：

单选题
Typical marine propulsion plants include（） directly coupled to the vessel’s single large-diameter, fixed-pitch propeller.
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


正确答案： A
解析： 暂无解析

第3题：

On a medium-speed main propulsion diesel engine, the crank-pin or crank journalbearings receive lubricating oil from( ).

A.a spindle lubricator

B.an oil jet

C.internal splashing

D.drilled passages in the crankshaft


正确答案：D
解析：medium：中等，介质;pin：销，刺穿，钉住;journal：轴颈;spindle：芯轴，转轴;lubricator：注油器;splash：飞溅
译文：对于中速主推进柴油机，曲柄销轴承通过曲轴内钻孔的油道供油润滑。

第4题：

单选题
The most practical way of detecting an overload in one cylinder of an operating large, low-speed ,main propulsion diesel engine is to （）
A

check the cylinder exhausts for black smoke

B

listen for combustion knock in that cylinder

C

isolate each cylinder and inspect the injector

D

check the cylinder exhaust temperature frequently


正确答案： C
解析： 暂无解析

第5题：

单选题
Starting a large low-speed propulsion diesel engine on diesel fuel during cold weather conditions, will be made easier by （）
A

increasing the quantity of starting air

B

increasing the lube oil pressure

C

heating the engine fuel supply

D

heating the engine coolant


正确答案： A
解析： 暂无解析

第6题：

单选题
For most diesel propulsion and generator engines, the over-speed trip device will stop the engine by （）
A

moving the governor control to stop

B

shutting off the lubricating oil supply

C

tripping the governor emergency stop lever

D

shutting off the fuel supply


正确答案： D
解析： 暂无解析

第7题：

单选题
Diesel engine cylinder head test cocks are used to（）
A

check cylinder lubrication prior to starting engine

B

connect exhaust gas analyzers to determine engine efficiency

C

pressure test cylinder heads to check for leaks

D

remove moisture accumulations from cylinder prior to starting


正确答案： D
解析： 暂无解析

第8题：

In a main propulsion turbocharged diesel engine, the speed of the turbocharger varies according to the _____.

A.governor droop

B.speeder spring tension

C.fuel rack lag

D.load on the engine


正确答案：D

第9题：

单选题
Why a gearbox is needed in a ship driven by a medium-speed diesel engine?（）
A

To reduce the main engine speed

B

To increase the main engine speed

C

To govern the main engine speed

D

To fix the propeller shaft


正确答案： A
解析： 暂无解析

第10题：

单选题
When attempting to start a main propulsion diesel engine, the engine, the engine turns at the proper speed but will not startYou should check the（）
A

starting air pressure

B

scavenge air pressure

C

over-speed trip

D

banjo oiler line


正确答案： B
解析： 暂无解析

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