In some modern large diesel engines, which of the following

题目
单选题
In some modern large diesel engines, which of the following is used as the support for the main bearings?()
A

Bedplate

B

Block

C

Base

D

Sump

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相似问题和答案

第1题:

Modern marine diesel engines equipped with mechanical fuel injection operate on a combustion phase within the cycle which is ______.

A.entirely constant pressure

B.entirely constant temperature

C.a combination of constant volume and constant pressure

D.a combination of constant temperature and constant pressure


正确答案:C

第2题:

单选题
In order to control thermal stresses, some types of modern engines use pistons with()
A

heavy wall and intensive cooling

B

heavy wall and no cooling

C

thin wall and no cooling

D

thin wall and intensive cooling


正确答案: C
解析: 暂无解析

第3题:

Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except______.

A.open the indicator cocks

B.supply some CYL.Oil to cylinder liner wall with lubricator (only for two stoke diesel engine)

C.put the fuel handle in the "stop" position

D.pump up the air bottle


正确答案:D

第4题:

单选题
On most modern diesel engines, the main and connecting rod bearings receive their lubricating oil by ().
A

banjo feed

B

splash feed

C

gravity feed

D

pressure feed


正确答案: B
解析: 暂无解析

第5题:

单选题
The over-speed trip device installed in some diesel engines is automatically actuated by()
A

spring force

B

hydraulic pressure

C

centrifugal force

D

mechanical linkage


正确答案: B
解析: 暂无解析

第6题:

Vessels required to be equipped with an approved backfire flame arrester are ______.

A.Those with diesel engines

B.All those with gasoline engines

C.Those with large engines only

D.None of the above


正确答案:B

第7题:

单选题
While underway, which of the following would be the FIRST step in reversing a direct reversing large, low-speed, main propulsion, diesel engine?()
A

Manually trip the over-speed device

B

Interrupt the fuel flow to the engine

C

Disengage the safety interlock

D

Slide the camshaft to the neutral position


正确答案: B
解析: 暂无解析

第8题:

The closing of the exhaust valves used on a modern, large, low-speed, main propulsion diesel engine may be directly provided by_______.

A.large conical springs

B.compressed air pressure

C.hydraulic pressure

D.exhaust gas pressure


正确答案:B

第9题:

单选题
Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except ()
A

open the indicator cocks

B

supply some LO to cylinder liner wall with lubricator

C

put the fuel handle in the stop position

D

pump up the air bottle


正确答案: C
解析: 暂无解析

第10题:

单选题
In large marine diesel engines cylinder oils usually contain additives formulated to impart the () to clean the rings and grooves.
A

inefficiency

B

oiliness

C

detergency

D

purity


正确答案: A
解析: 暂无解析

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