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The essential part of the diesel engine, whose function is t

题目
单选题
The essential part of the diesel engine, whose function is to convert the heat energy into the mechanical power, is the （）.
A

crankshaft

B

piston

C

connecting rod

D

bearing

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相似问题和答案

第1题：

One cylinder of a diesel engine is persistently knocking and does not cease(停止) when the fuel supply to that cylinder is secured.Which of the following problems may be the cause?

A.Low loading of the cylinder

B.Excessive cooling of that piston

C.Sluggish ring action on the piston

D.A mechanical defect in a working part


正确答案：D

第2题：

单选题
The marine diesel engine is a type of diesel engine used on ships The （） of its operation is not very difficult to understand.
A

principle

B

principal

C

cause

D

case


正确答案： D
解析： 暂无解析

第3题：

The purpose of treating the cooling water of the diesel engine is to______. I、 resist the scale formation in the cooling chamber II、lubricate the engine part II III、increase thermal capacity IV、 resist corrosion

A.I + II

B.II + III

C.III + IV

D.I + IV


正确答案：D

第4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5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


正确答案： D
解析： 暂无解析

第6题：

单选题
Most troubles likely to occur with marine diesel engine can, if located in time, be remedied with no difficulty and many can be （）if the engine is maintained with a high sense of responsibility to the people on the part of the motormen and engineers.
A

found out

B

eliminated

C

avoided

D

lowered


正确答案： C
解析： 暂无解析

第7题：

单选题
Which of the following statements describes the function of an expansion tank in a diesel engine cooling system?（）
A

Maintains a constant head on the system

B

Reduces the likelihood of air or steam pockets formation

C

Provides a low pressure point for the addition of makeup cooling water

D

All of the above


正确答案： D
解析： 暂无解析

第8题：

The purpose of treating the cooling water of the diesel engine is to____. I、 resist the scale formation in the cooling chamber II、 lubricate the engine part III、 increase thermal capacity IV、 resist corrosion

A.I +II

B.II + III

C.III + IV

D.I +IV


正确答案：D

第9题：

单选题
The purpose of treating the cooling water of the diesel engine is to（） Ⅰ. resist the scale formation in the cooling chamber Ⅱ.lubricate the engine part Ⅲ.increase thermal capacity Ⅳ.resist corrosion
A

Ⅰ+Ⅱ

B

Ⅱ+Ⅲ

C

Ⅲ+Ⅳ

D

Ⅰ+Ⅳ


正确答案： D
解析： 暂无解析

第10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


正确答案： A
解析： 暂无解析

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