海船船员考试

单选题The cylinder head, cylinder liner and （） form the combustion chamber.A frameB pistonC crankcaseD explosion plate

题目
单选题
The cylinder head, cylinder liner and （） form the combustion chamber.
A

frame

B

piston

C

crankcase

D

explosion plate

参考答案和解析
正确答案： C
解析： 暂无解析
如果没有搜索结果，请直接 联系老师 获取答案。
相似问题和答案

第1题：

单选题
Low compression in a diesel engine can be caused by （）
A

clogged coolant passages

B

a leaking cylinder head gasket

C

low fuel oil pressure

D

worn or broken cylinder liner sealing rings


正确答案： D
解析： 暂无解析

第2题：

单选题
In addition to lubricating, cylinder oil assists in forming a gas seal and contains （） which clean the cylinder liner.
A

additives

B

water

C

grease

D

acid solution


正确答案： A
解析： 暂无解析

第3题：

Diesel engine blow-by is the leakage of combustion gases past the( ).

A.oil rings only

B.compression and scraper rings

C.cylinder liner sealing

D.cylinder liner ring grooves


正确答案：B
解析：scraper：刮刀;groove：槽
译文：柴油机漏气指的是燃气通过压缩环(气环)和刮油环泄漏。

第4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5题：

单选题
Improper cooling of a diesel engine cylinder liner due to the accumulation of scale deposits may cause （）.
A

low compression pressure

B

increased piston wear

C

increased cylinder lube oil consumption

D

poor contact between compression rings and liner


正确答案： B
解析： 暂无解析

第6题：

单选题
The primary purpose of oil control rings on a diesel piston is to（）
A

provide a reservoir for cylinder lubrication

B

pump oil into the combustion space for cylinder cooling

C

prevent excessive lubricating oil consumption

D

allow hydraulic oil film formation on the cylinder


正确答案： A
解析： 暂无解析

第7题：

单选题
One end of a diesel engine cylinder is sealed by the cylinder head and the other end by the （）
A

crankcase

B

piston

C

cylinder liner

D

crank cheek


正确答案： B
解析： 暂无解析

第8题：

How does combustion air enter the cylinder of a two-cycle diesel engine ? Through _______．

A.Cylinder head valves

B.Ports

C.Turbo chargers

D.Bleeder valves


正确答案：B

第9题：

单选题
The diameter of a piston is usually less at the crown than at the skirt, in order to （）.
A

facilitate the installation of piston rings

B

allow for the expansion of the piston during operation

C

prevent crankcase vapors from entering the combustion chamber

D

reduce wearing of the upper cylinder liner


正确答案： A
解析： 暂无解析

第10题：

单选题
The main function of piston compression rings is to （）
A

prevent excessive cylinder liner wear

B

reduce friction losses in the engine

C

seal the space between the piston and the liner

D

limit upward flow of lube oil into the combustion space


正确答案： C
解析： 暂无解析

更多相关问题
相关内容