题目内容（请给出正确答案）

[主观题]

A water jacket is placed around the exhaust manifolds of propulsion diesel enginesto

().

A.reduce heat radiation to the engine room

B.aid in preventing turbocharger overheating

C.condense and drain moisture from exhaust gases

D.dampen exhaust gas pulsations in the manifold

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更多“A water jacket is placed aroun…”相关的问题

第1题

The space between cylinder liner and jacket is called _____.A.the cooling waterB.the circu

The space between cylinder liner and jacket is called _____.

A.the cooling water

B.the circulating water

C.the cooler

D.the cooling water space

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第2题

When a vacuum boiling evaporator works, the hot jacket water will pass over the tube stack

and ___ the sea water passing through the tubes.

A.dispose

B.dissolve

C.heat

D.dissipates

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第3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

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第4题

If an auxiliary diesel engine coolant temperature is higher than normal, but the thermosta

t is determined not to be defective, you would suspect a/an

A.cavitation erosion in the water jackets

B.excess corrosion inhibitor in the coolant

C.dirty jacket water cooler

D.defective turbocharger

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第5题

The main propulsion diesel engine jacket water temperature rises above normal, with the ra

w sea suction and the expansion tank water level being normal. Which of the following problems is most likely the cause？

A.Faulty thermostatic bypass valve

B.Eroded zinc pencils in the heat exchanger

C.Steam formation in the expansion tank

D.Excessive leakage from jacket water pump seals

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第6题

The most serious effect of air trapped in a diesel engine jacket water cooling system is t

hat it ______．

A.Causes colloid suspension in the cooling water

B.Reduces the capability of the lubrication system

C.Can form pockets which block the flow of coolant through the system

D.Leads to the scuffing of cylinder walls

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第7题

Two relative cooling water systems are designed for this prupose,respectively() termed

Two relative cooling water systems are designed for this prupose,respectively（) termed

A. fresh water cooling system and sea water system

B. sea water cooling system and lubricating oil cooling system

C. fresh water cooling system and lubricating oil cooling system

D. jacket cooling system and piston cooling system

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第8题

Piston cooling fins are locatedA.atop the piston crownB.beneath the piston crownC.at the b

Piston cooling fins are located

A.atop the piston crown

B.beneath the piston crown

C.at the base of the piston skirt

D.inside the cylinder liner cooling water jacket

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第9题

Indirect cooling of fuel injector nozzle holders for diesel engines is accomplished primar

ily by

A.heat conduction into the injected fuel oil

B.heat conduction into the water jacket wall

C.water circulation through passages in the holder

D.fuel oil circulation through passages m the holder

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第10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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