海船船员考试

单选题Diesel engines obtain combustion air through turbo chargers,blowers,or().A air startersB carburetorsC natural aspirationD air receivers

题目
单选题
Diesel engines obtain combustion air through turbo chargers,blowers,or().
A

air starters

B

carburetors

C

natural aspiration

D

air receivers

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相似问题和答案

第1题:

All diesel engines are classified as ______.

A.Four cycle

B.Compression ignition

C.Vacuum ignition

D.External combustion


正确答案:B

第2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3题:

If the exhaust gas temperature of the incinerator is too high, or if sparks are developed, What should you do?

A.Close the inlet and outletvalves for diesel oil

B.Open the air nozzles in the secondary combustion chamber until it stops

C.Open the air nozzles in the primary combustion chamber until it stops

D.Close inlet valve for pressurized air


答案:B

第4题:

单选题
Poor combustion in a diesel engine can be caused by ().
A

high compression pressure

B

low intake air temperature

C

low exhaust pressure

D

high scavenge air temperature


正确答案: D
解析: 暂无解析

第5题:

单选题
White smoke exhausting from an operating diesel engine may indicate ().
A

a cracked liner

B

burning lube oil

C

an overloaded engine

D

insufficient combustion air


正确答案: D
解析: 暂无解析

第6题:

Diesel engines obtain combustion air through turbo chargers,blowers,or ______.

A.Air starters

B.Carburetors

C.Natural aspiration

D.Air receivers


正确答案:C

第7题:

单选题
Propulsion engines and the vast majority of auxiliary generator engines are designed to allow a generous through-flow of scavenge air in order to control ()
A

the lubricating oil consumption

B

the turbine blade temperature

C

the flow rate of fuel

D

scavenge air pressure


正确答案: A
解析: 暂无解析

第8题:

The separation of impurities and water from ______is essential for good combustion of diesel engines.

A.lube oil

B.fuel oil

C.turbine oil

D.grease


正确答案:B

第9题:

单选题
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting ().
A

a shortened ignition delay period

B

a lean fuel/air mixture

C

excess fuel in the combustion chamber

D

rapid vaporization of injected fuel droplets


正确答案: C
解析: 暂无解析

第10题:

单选题
Modem engines make use of exhaust gas driven turbo-chargers to supply pressurized fresh air for () and supercharging.
A

scavenging

B

starting

C

cooling

D

blowing


正确答案: C
解析: 暂无解析

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