海船船员考试

单选题To successfully reduce an excessively high diesel engine exhaust gas temperature, you should （）.A reduce the engine driven fuel pump outlet pressureB retard the fuel injector timing to reduce powerC increase the fuel rack settingD reduce the load on th

题目
单选题
To successfully reduce an excessively high diesel engine exhaust gas temperature, you should （）.
A

reduce the engine driven fuel pump outlet pressure

B

retard the fuel injector timing to reduce power

C

increase the fuel rack setting

D

reduce the load on the engine

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相似问题和答案

第1题：

Oil oxidation as a result of excessively high lube oil temperature, is harmful to a diesel engine Because

A.oil foaming will always occur

B.large quantities of oil are consumed

C.lube oil viscosity is always decreased

D.corrosive by-products are usually formed


正确答案：D

第2题：

单选题
A marine diesel engine is started by（）
A

supplying high pressure oil into a hydraulic motor

B

supplying high temperature air into the cylinder

C

supplying high pressure air into the cylinder

D

electrical igniting


正确答案： C
解析： 暂无解析

第3题：

A diesel engine exposed to widely varying ambient temperatures should use to a lubricating oil with .

A.a high viscosity index

B.a low viscosity index

C.neutralize acids

D.resist oxidation at high temperatures


正确答案：A

第4题：

单选题
An over-speed trip stops a diesel engine when the engine （）
A

runs out of fuel

B

has low lubricating oil pressure

C

exceeds a set maximum speed

D

has high cooling water temperature


正确答案： B
解析： 暂无解析

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


正确答案： C
解析： 暂无解析

第6题：

A bypass line provided around a waste heat auxiliary boiler in a diesel engine exhaust system, may be used to avoid boiler ______.

A.corrosion at low engine loads

B.erosion at high engine loads

C.overload at high engine loads

D.scaling at all exhaust temperatures


正确答案：A

第7题：

单选题
During the running of the diesel engine, if the supply of cooling water is interrupted or the temperature of cooling water out of the cylinder is too high, the duty engineer should （）
A

notify the duty officer, reduce the engine speed, take some measures to remove failures

B

notify the duty officer and stop the engine immediately, find the cause and remove failures

C

notify the C/E

D

notify the captain


正确答案： A
解析： 暂无解析

第8题：

If the jacket water temperature rises rapidly above normal in a diesel engine, you should first

A.place standby cooler in operation

B.reduce engine load

C.check thermostatic valve

D.clean sea water strainer


正确答案：B

第9题：

单选题
Before shutting off the fuel supply to stop a medium or high–speed diesel engine, why is it necessary to allow the engine to idle for a few minutes?（）
A

To prevent internal damage form local overheating

B

To ensure the fuel nozzles are flushed clean

C

To clear the smoke stack

D

To let the waste heat boiler reduce its rate of steam generation


正确答案： D
解析： 暂无解析

第10题：

单选题
In a diesel engine, exhaust valves open before the intake ports are uncovered to （） Ⅰ.reduce pumping losses Ⅱ.reduce back pressure
A

Ⅰonly

B

Ⅱonly

C

bothⅠand Ⅱ

D

neitherⅠnor Ⅱ


正确答案： B
解析： 暂无解析

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