Problems with the diesel engine fuel injection pump are usually caused by()
A . improper adjustment
B . contaminated fuel
C . kinked fuel lines
D . excessive engine vibratio
相似题目
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A diesel engine piston ring face is in direct contact with the ().
A . top of the ring groove
B . cylinder liner oil film
C . bottom of the ring groove
D . back of the ring groove
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The most common diesel engine fuel system problems are caused by ().
A . incorrect adjustments
B . dirty fuel
C . broken fuel lines
D . excessive vibratio
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Which of the problems listed represents the major difficulty encountered with thermal expansion valve operation?()
A . Lube oil passing through the system
B . Moisture or foreign matter collecting at the valve seat and orifice
C . Variable spring tension caused by the changing temperature
D . Frost on the liquid line
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On a turbo-charged, medium-speed diesel engine, which of the following problems is an indication of a restricted air intake passage?()
A . Engine is hard to start
B . Engine misses
C . Surges at governed RPM
D . Coolant temperature is too low
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Jitter is causing problems with the VOIP application in the network. What causes network jitter?()
A . Variable queue delays
B . Packet drops
C . Transmitting too many small packets
D . Compressio
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What are three problems with the tail drop mechanism of managing interface congestion?()
A . Queuing introduces equal delays for packets of the same flow, resulting in jitter.
B . When congestion occurs, dropping affects most of the TCP sessions, which simultaneously back off and then restart again.
C . All buffers can temporarily be seized by aggressive flows, and normal TCP flows experience buffer starvation.
D . There is no differentiated drop mechanism. Higher priority traffic is dropped in the same way as best-effort traffic.
E . In TCP starvation, traffic exceeds the queue limit because of the bursty nature of packet networks. A router cannot handle multiple concurrent TCP sessions.
F . Global synchronization occurs because multiple TCP hosts reduce their transmission rates at random intervals in response to packet dropping
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Which of the following problems can cause fluctuating pressures in the closed cooling system of a main propulsion diesel engine?()
A . Defective temperature controls in the system
B . Cavitation in the cooling water pump
C . Opened vent in the cooling system
D . Restricted water passages in the engine
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Jitter is causing problems with the VOIP application in the Company network. What causes network jitter?()
A . Variable queue delays
B . Packet drops
C . Transmitting too many small packets
D . Compressio
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With respect to diesel fuel, the ease with which a cold engine will start is dependent upon the()
A . ignition quality of the fuel
B . high heating value of the fuel
C . amount of carbon residue after combustion
D . internal flow resistance in the injector
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Which of the following problems can cause an above normal air temperature to develop in the intake manifold of a turbocharged and after-cooled diesel engine?()
A . Faulty turbocharger turbine diffuser ring
B . Faulty turbocharger compressor ring
C . Insufficient cooling water flow
D . Clogged air intake filter
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The main propulsion diesel engine jacket water temperature rises above normal, with the raw water sea suction and the expansion tank water level being normalWhich 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 seal
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In response to the social, political and economic problems associated with industrialisation, ( ) novel becomes the leading genre of the Victorian literature.
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The novels of George Eliot mostly deal with ( ) problems and contain psychological studies of the characters.
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In response to the social, political and economic problems associated with industrialisation, ( ) novel becomes the leading genre of the Victorian literature.
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Which of the following documents are concerned with Northern Ireland problems?
A、The Declaration of Independence
B、The Home Rule Bill
C、The Downing-Street Declaration
D、Magna Carta
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Problems with the diesel engine fuel injection pump are usually caused by_____.
A.improper adjustment
B.contaminated fuel
C.kinked fuel lines
D.excessive engine vibration
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The traditional approach _________ with complex problems is to break them down into smaller, more easily managed problems.
A) to dealing B) in dealing
C) dealing D) to deal
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Whom will Dobson call to deal with the problems in Italian market?
A.Ted
B.Mr. Evans
C.Rebecca
D.Paola Andreotti
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The traditional approach ______ with complex problems is to break them down into smaller, more easily managed problems.
A.to dealing
B.in dealing
C.dealing
D.to deal
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With respect to diesel fuel, the ease with which a cold engine will start is dependent upon the__________
A.ignition quality of the fuel
B.high heating value of the fuel
C.amount of carbon residue after combustion
D.internal flow resistance in the injectors
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By referring to problems with the Mexican immigrant workforce the author means to say that______.
A.the government should be more selective about which immigrants they allow
B.employers must improve their recruitment methods to avoid hiring them
C.the education system needs to create programs to upgrade workers" skills
D.the result will be a decrease in American competitiveness
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听力原文:According to the researchers, what measures can be taken to help with sleep problems?
(32)
A.Increasing visits to doctors.
B.More training among health care workers.
C.Having better diets and exercise.
D.Producing less at work.
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The traditional approach ( ) with complex problems is to break them down into smaller, more easily managed problems.
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I never really had any problems with change. On the contrary, I welcome change__()
A.with open arms
B.all at once
C.strip off
D.over time