题目内容（请给出正确答案）

[主观题]

In any diesel engine closed freshwater cooling system, the lowest pressure exists at the _

____.

A.jacket water outlet

B.cooling water pump outlet

C.heat exchanger outlet

D.expansion tank atmospheric vent

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更多“In any diesel engine closed fr…”相关的问题

第1题

Immediately after any diesel engine is started, the engineer should check the ______.A.cra

Immediately after any diesel engine is started, the engineer should check the ______.

A.crankcase pressure

B.lube oil pressure

C.saltwater pressure

D.exhaust temperature

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第2题

If the compression ratio is increased on any diesel engine, ________.A.the expansion ratio

If the compression ratio is increased on any diesel engine, ________.

A.the expansion ratio will decrease

B.combustion will be slowed down

C.thermal efficiency will decrease

D.thermal efficiency will increase

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第3题

If you are unable to stop a diesel engine by any other means，you should ______．A.Discharge

If you are unable to stop a diesel engine by any other means，you should ______．

A.Discharge a CO2 extinguisher in the air inlet

B.Pull off the distributor cap

C.Secure the jacket water

D.Secure the starting air supply valve

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第4题

Any increase in the exhaust back pressure of a four-stroke/cycle diesel enginewill（).

Any increase in the exhaust back pressure of a four-stroke/cycle diesel enginewill().

A.reduce engine horsepower output

B.aid in silencing the exhaust noise

C.increase the mean effective pressure

D.contribute to effective cylinder scavenging

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第5题

What is the crank angle between any two crank throws in the firing order of a four-stroke/

cycle, in line, eight cylinder diesel engine？

A.45

B.60

C.90

D.100

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第6题

The diesel engine exhaust gas bypass, as fitted with some waste heat boilers, is installed

to _________.

A.prevent engine back pressure at heavy loads

B.increase total engine efficiency at low loads

C.prevent boiler corrosion at low engine loads

D.improve engine fuel consumption at any load

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第7题

There is（）in any water cooling system for a diesel engine allowing for expansion and water make-up in the system as well as air vent and chemicals addition

A．setting tank

B．a service tank

C．a head tank

D．an expansion joint

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第8题

Diesel engine control can be obtained by the bridge（）

A．at any time

B．only after the engine room control station is switched to “bridge control”

C．whenever the secondary station is switched to "bridge control"

D．with the approval of the chief engineer only

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第9题

Before starting any diesel or gasoline engine, which of the following must be checked？____

A.Oil level

B.Flow of cooling water

C.Exhaust discharge

D.All of the above

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第10题

Piston compression rings used in a diesel engine function to _________.A.transfer heat fro

Piston compression rings used in a diesel engine function to _________.

A.transfer heat from the cylinder to the piston

B.scrape oil from the sides of the piston

C.seal the combustion space from the crankcases

D.prevent any piston contact with the cylinder liner

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