单选题Turbocharging of marine diesel engine is achieved by two distinct methods, （） termed the constant pressure and the pulse system.A respectableB respectfulC respectiveD respectively

题目
单选题
Turbocharging of marine diesel engine is achieved by two distinct methods, （） termed the constant pressure and the pulse system.
A

respectable

B

respectful

C

respective

D

respectively

相似考题

1.A two stroke diesel engine exhaust temperature will be lower than a four stroke diesel engine of the same displacement because the _____. ① MEP is lower and the scavenging air is cooling the exhaust gases ② valve overlap in a four strokeA.①B.②C.① and ②D.Neither ① nor ② is correct

2.单选题Most troubles likely to occur with marine diesel engine can, if located in time, be remedied with no difficulty and many can be （）if the engine is maintained with a high sense of responsibility to the people on the part of the motormen and engineers.A found outB eliminatedC avoidedD lowered

3.单选题The marine diesel engine is a type of diesel engine used on ships The （） of its operation is not very difficult to understand.A principleB principalC causeD case

4.One of the factors limiting the amount of toad which can be put on a modem marine diesel engine is the_______.A.governor sensitivityB.exhaust temperatureC.fuel injection pressureD.speed of the cam shaft

更多“Turbocharging of marine diesel engine is achieved by two dis”相关问题

  • 第1题：

    单选题
    Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.
    A

    spark plugs

    B

    glow plugs

    C

    heat of compression

    D

    a magneto


    正确答案： A
    解析： 暂无解析

  • 第2题：

    单选题
    The camshaft drive is designed to maintain proper camshaft speed relative to crankshaft speedIn maintaining this relationship, the camshaft drive causes the camshaft to rotate at（）
    A

    one half crankshaft speed in a two-stroke cycle diesel engine

    B

    crankshaft speed in a two-stroke cycle diesel engine

    C

    two times crankshaft speed in a two-stroke cycle diesel engine

    D

    one-fourth times crankshaft speed in a four-stroke cycle diesel engine


    正确答案： A
    解析： 暂无解析

  • 第3题：

    单选题
    The size of the exhaust valve opening is （）
    A

    most critical in a four-stroke cycle diesel engine

    B

    most critical in a two-stroke/cycle diesel engine

    C

    most critical in a four-stroke/cycle diesel engine if it is turbocharged

    D

    of equal importance in a two-stroke/cycle diesel engine as in a four-stroke/cycle diesel engine


    正确答案： A
    解析： 暂无解析

  • 第4题：

    单选题
    Before a marine diesel engine is started the cylinders and pistons must be （）.
    A

    cooled to appropriate temperature

    B

    warmed up gradually to appropriate temperature

    C

    opened up and renewed

    D

    ground and polished


    正确答案： A
    解析： 暂无解析

  • 第5题：

    单选题
    Lubricating oil is supplied to the crank-pin bearings in a marine diesel engine by （）.
    A

    internal crankshaft passages

    B

    immersion in oil

    C

    splash lubrication

    D

    injection lubrication


    正确答案： A
    解析： 暂无解析

  • 第6题：

    单选题
    The following preparations are essential for any （） of marine diesel engine before it may be started.
    A

    doing

    B

    make

    C

    turn

    D

    operating


    正确答案： B
    解析： 暂无解析

  • 第7题：

    单选题
    One of the factors limiting the amount of load which can be put on a modern marine diesel engine is the （）
    A

    governor sensitivity

    B

    exhaust temperature

    C

    fuel injection pressure

    D

    speed of the can shaft


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    A large two-stroke/cycle direct reversing diesel engine is to be reversedPrior to the admission of starting air you must （）
    A

    line up the engine fore restarting with light diesel oil

    B

    reposition the fuel injection cam

    C

    change the intake and exhaust valve cam positions

    D

    place the starting cam in the intermediate position


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    A two-stroke/cycle diesel engine requires less starting air than a four-stroke/cycle diesel engine, of equal displacement, because the two-stroke/cycle diesel engine（）
    A

    has little or no internal friction

    B

    has a lower effective compression ratio

    C

    operates with scavenge air under a positive pressure

    D

    operates without energy absorbing intake and exhaust strokes


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.
    A

    it has a longer power stroke

    B

    more air gets into the cylinder each stroke

    C

    it develops twice as many power strokes at the same speed

    D

    higher combustion pressure is developed


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    Fresh water is used for the cooling of cylinder jackets and （） of the marine diesel engine.
    A

    cylinder covers

    B

    lubricating space

    C

    crosshead

    D

    exhaust manifold


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    A piston in a four-stroke/cycle diesel engine makes four strokes during each （）.
    A

    crankshaft revolution

    B

    mechanical cycle of operation

    C

    period of two combustion cycles

    D

    cycle of two events


    正确答案： B
    解析： 暂无解析

  • 第13题：

    单选题
    One of the purposes for water cooling the exhaust manifold in marine diesel engine is to （）
    A

    reduce lube oil temperature

    B

    raise exhaust temperature reduce

    C

    excessive heating of engine room

    D

    reduce load on cooling water pump


    正确答案： C
    解析： 暂无解析

  • 第14题：

    单选题
    A diesel engine with a combustion chamber located between the crowns of two pistons is known as a/an （）.
    A

    double-acting engine

    B

    opposed pistons engine

    C

    single-acting engine

    D

    horizontal acting engine


    正确答案： D
    解析： 暂无解析

  • 第15题：

    单选题
    Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
    A

    Exhaust and scavenging

    B

    Scavenging and compression

    C

    Ignition and expansion

    D

    Exhaust and compression


    正确答案： A
    解析： 暂无解析

  • 第16题：

    单选题
    The exhaust system for a turbocharged two-stroke/cycle diesel engine functions to（）
    A

    discharge exhaust gases and smoke

    B

    furnish energy to the turbocharger

    C

    reduce engine room noise

    D

    all of the above


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    Proper lubrication of the main bearing is more easily obtained in a single acting four-stroke/cycle diesel engine than in a single acting two-stroke/cycle diesel engine because （）
    A

    bearing pressure in a four-stroke/cycle acting single diesel engine is continually reversed

    B

    bearing pressure in a two-stroke/cycle single acting diesel engine is continually reversed

    C

    the maximum bearing pressure is higher in a single acting two-stroke/cycle diesel engine

    D

    two-stoke/cycle diesel engines require more complicated lubrication piping


    正确答案： B
    解析： 暂无解析

  • 第18题：

    单选题
    Two-stroke engine turbocharging is achieved by two distinct methods, （） termed the constant pressure and the pulse system.
    A

    respectable

    B

    respectful

    C

    respective

    D

    respectively


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    One method of constructing large marine diesel engines and reducing the total engine frame weight is through （）.
    A

    casting interlocking components

    B

    welding plates to form sections for assembly

    C

    forging integral components

    D

    case hardening integral components


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    Which of the following statements is true regarding the installation of piston rings on two-stroke/cycle, diesel engines as compared to four-stroke/cycle, diesel engines?（）
    A

    In a two-stroke/cycle engine, the rings run hotter, requiring the end gap to be greater

    B

    Some provision must be made in a two-stroke/cycle engine to keep the rings from binding in the ports

    C

    No gap is required to exist between the ends of the ring when cold in a two-stroke/cycle engine, but a small gap is required in a four-stoke/cycle engine

    D

    The gaps should be staggered on either side of a piston in a two-stroke/cycle engine, while staggering is not necessary in a four-stroke/cycle engine


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    The two strokes of a two-stroke/cycle diesel engine are （）
    A

    power and intake

    B

    intake and exhaust

    C

    exhaust and compression

    D

    compression and power


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    （）uses one or two high pressure pumps for all the cylinders with one more standby, while（）have a separate high-pressure pump for each cylinder.
    A

    A common rail engine；conventional engines

    B

    A conventional engine；common rail engines

    C

    A marine diesel engine；most other engines

    D

    A two-stroke engine；four-stroke engines


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    A six-cylinder, two-stroke/cycle diesel engine is fitted with a rotary distributing air starting systemThe speed of the rotating distributor disc is （）
    A

    one-half engine speed

    B

    the same as engine speed

    C

    twice engine speed

    D

    four times engine speed


    正确答案： B
    解析： 暂无解析

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