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

题目
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

principle

B

principal

C

cause

D

case

相似考题

1._____ the engines, the diesel engine is ____ used engine on boardA.Between / more commonlyB.Among / the most commonlyC.Between / not more commonlyD.Among / not the most commonly

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To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）A Speed limiting governorB Over-speed governorC Over-speed tripD Over-speed relay

4.In an auxiliary diesel engine bypass type lubricating oil system, the main lube oil pump forces_______ .A.all of the oil used by the engine through a filterB.some of the oil used by the engine through a filterC.some of the oil used by the engine through a centrifugeD.all of the oil used by the engine through a centrifuge

更多“The marine diesel engine is a type of diesel engine used on”相关问题

  • 第1题：

    单选题
    Diesel oil may be used to cool （） of a diesel engine.
    A

    cylinders

    B

    exhaust valves

    C

    pistons

    D

    fuel valves


    正确答案： D
    解析： 暂无解析

  • 第2题：

    单选题
    Gear-type flexible couplings are often used in diesel engine drive trains because they（）
    A

    require no lubrication under normal operating conditions

    B

    compensate for gross misalignment in the drive train

    C

    are able to transmit high torque ,even where slight misalignment exists

    D

    will rapidly disconnect the engine from the line shaft


    正确答案： A
    解析： 暂无解析

  • 第3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
    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6题：

    单选题
    If the detergent type lubricating oil being used in a diesel engine is black, the oil （）
    A

    must be centrifuged

    B

    must by filtered

    C

    must be changed

    D

    is holding finely dispersed carbon in suspension


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    The lube oil pump used in a diesel engine is a （）.
    A

    volute pump

    B

    centrifugal pump

    C

    diaphragm pump

    D

    gear pump


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    Sacrificial zinc anodes are used on the saltwater side of diesel engine heat exchangers to（）.
    A

    reduce electrolytic action on heat exchanger metals

    B

    keep heat transfer surfaces shiny and clean

    C

    prevent rapid accumulation of marine growth

    D

    provide a protective coating on heat exchanger surfaces


    正确答案： A
    解析： 暂无解析

  • 第9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10题：

    单选题
    “This increase in charge air density is accomplished on most modern diesel engine types by use of exhaust gas turbo-charging, in which a turbine wheel driven by exhaust from the engine is rigidly coupled to a centrifugal type air compressor” According to this sentence, we can know that increases density（）, drives the compressor directly（）
    A

    a modern diesel engine；a turbine wheel

    B

    a modem diesel engine；exhaust gases

    C

    a compressor；an exhaust gas turbocharger

    D

    a compressor；a turbine wheel


    正确答案： A
    解析： 暂无解析

  • 第11题：

    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


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    The purpose of the compensating adjustment used in a diesel engine hydraulic governor is to （）
    A

    compensate for low oil level

    B

    increase governor promptness

    C

    prevent governor hunting

    D

    limit engine load


    正确答案： A
    解析： 暂无解析

  • 第13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14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15题：

    单选题
    The diesel engine is a type of internal combustion engine which ignites the fuel by injecting it into hot, high pressure air in a （）.
    A

    air bottle

    B

    air compressor

    C

    crank case

    D

    combustion chamber


    正确答案： D
    解析： 暂无解析

  • 第16题：

    单选题
    （） the engines, the diesel engine is（） used engine on board.
    A

    Between；more commonly

    B

    Among；the most commonly

    C

    Between；not more commonly

    D

    Among；not the most commonly


    正确答案： D
    解析： 暂无解析

  • 第17题：

    单选题
    Which of the combustion parameters listed is used in a diesel engine, but NOT related to the injection system?（）
    A

    Atomization

    B

    Metering

    C

    Effective stroke

    D

    Penetration


    正确答案： C
    解析： 暂无解析

  • 第18题：

    单选题
    A Kort nozzle is a(n)（）.
    A

    hollow tube surrounding the propeller used to improve thrust

    B

    nozzle attached to a firefighting hose

    C

    intake valve on a diesel engine

    D

    piston cylinder on a diesel engine


    正确答案： A
    解析： 暂无解析

  • 第19题：

    单选题
    The diesel engine is a type of （）.
    A

    turbine engine

    B

    gas turbine

    C

    steam engine

    D

    internal combustion engine


    正确答案： A
    解析： 暂无解析

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