Cylinders of marine diesel engines are normally cooled by ___ .A.sea waterB.fine mineral oilC.sanitary waterD.fresh water

题目

Cylinders of marine diesel engines are normally cooled by ___ .

A.sea water

B.fine mineral oil

C.sanitary water

D.fresh water

相似考题

1.Each cylinder liner on the marine medium speed engines _____.A.is usually cooled by sea waterB.can be replaced when worn outC.is in direct contact with the water in the bore of the cylinderD.can t expand when heated

2.A sudden power loss from a turbocharged and after-cooled diesel engine is an indication of a/anA.turbocharger malfunction or failureB.crankcase exhauster overloadC.overload on the intercoolerD.obstruction in the engine cylinders

3.Diesel engines are started by supplying_____into the cylinders in the appropriate sequence for the required direction.A.cooling waterB.compressing airC.compressed airD.cylinder oil

4.Diesel engines are started by supplying into the cylinders in the appropriate sequence for the required direction.A.cooling waterB.compressing airC.compressed airD.cylinder oil

更多“Cylinders of marine diesel engines are normally cooled by ___ .A.sea waterB.fine mineral o ”相关问题

  • 第1题：

    Modern marine diesel engines equipped with mechanical fuel injection operate on a combustion phase within the cycle which is ______.

    A.entirely constant pressure

    B.entirely constant temperature

    C.a combination of constant volume and constant pressure

    D.a combination of constant temperature and constant pressure


    正确答案：C

  • 第2题：

    单选题
    In large marine diesel engines cylinder oils usually contain additives formulated to impart the （） to clean the rings and grooves.
    A

    inefficiency

    B

    oiliness

    C

    detergency

    D

    purity


    正确答案： A
    解析： 暂无解析

  • 第3题：

    单选题
    The majority of medium speed and high speed marine diesel engines for main or auxiliary drive operate on the （） cycle.
    A

    two-stroke

    B

    four-stoke

    C

    long-stroke

    D

    short-stroke


    正确答案： B
    解析： 暂无解析

  • 第4题：

    单选题
    Marine four-stroke diesel engines are mainly （）.
    A

    of crosshead type

    B

    of trunk piston type

    C

    of low speed type

    D

    all the above


    正确答案： D
    解析： 暂无解析

  • 第5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6题：

    单选题
    Cylinders of marine diesel engines are normally cooled by （）.
    A

    sea water

    B

    fine mineral oil

    C

    sanitary water

    D

    fresh water


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    A sudden power loss from a turbocharged and after-cooled diesel engine is an indication of a/an（）
    A

    turbocharger malfunction or failure

    B

    crankcase exhauster overload

    C

    overload on the intercooler

    D

    obstruction in the engine cylinders


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    （） providing lubricating films, oil used in marine diesel engines have to remove heat from oil cooled piston.
    A

    Except for

    B

    Beside

    C

    Except

    D

    In addition to


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    Diesel engines are started by supplying （） into the cylinders in the appropriate sequence for the required direction.
    A

    cooling water

    B

    compressing air

    C

    compressed air

    D

    cylinder oil


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    The marine bill of lading normally issued by （）.
    A

    the shipowner

    B

    the carrier

    C

    the shipper

    D

    the consigner


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    Modern marine diesel engines using mechanical fuel injection, operate on a combustion cycle which is（）
    A

    a combination of constant volume and constant pressure

    B

    a combination of constant temperature and constant pressure

    C

    entirely constant pressure

    D

    entirely constant volume


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    Some diesel engines are fitted with a thermometer in the cooling water outlet from each cylinderIf the cooling water temperature from all cylinders begins to rise above normal, you should suspect （）
    A

    increase blow-by in all cylinders

    B

    incomplete combustion in all cylinder

    C

    overloading in all cylinders

    D

    insufficient fuel delivery to all cylinders


    正确答案： B
    解析： 暂无解析

  • 第13题：

    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


    正确答案： D
    解析： 暂无解析

  • 第14题：

    单选题
    Which of the following will be the function of lubricating oil used in marine engines?（）
    A

    to remove heat from oil cooled pistons

    B

    to wash away wear detritus

    C

    to neutralize acidic products

    D

    all of the above


    正确答案： A
    解析： 暂无解析

  • 第15题：

    单选题
    Each cylinder liner on the marine medium speed engines （）.
    A

    is usually cooled by sea water

    B

    can be replaced when worn out

    C

    is in direct contact with the water in the bore of the cylinder

    D

    can t expand when heated


    正确答案： A
    解析： 暂无解析

  • 第16题：

    单选题
    （）, so they are widely used on board ship nowadays.
    A

    Diesel engines have more advantages in comparison with gasoline engines

    B

    Diesel engines have more advantages in comparison to gasoline engines

    C

    Gasoline engines have more advantages in comparison with diesel engines

    D

    Gasoline engines have more advantages in comparison to diesel engines


    正确答案： D
    解析： 暂无解析

  • 第17题：

    单选题
    Cooling water pumps driven by direct reversing diesel engines are usually of the straight impeller vane type pump with a concentric housing to（）
    A

    facilitate bi-directional operation

    B

    provide the greatest pump efficiency

    C

    prevent pump clogging from marine growth

    D

    prevent cavitation at the pump outlet


    正确答案： A
    解析： 暂无解析

  • 第18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19题：

    单选题
    （）diesel engines generally have two systems of lubrication:（）a total loss system feeding and a circulating system lubricating the running gear and cooling the pistons.
    A

    Large crosshead type；crossheads

    B

    High speed；the cylinders

    C

    Large crosshead type；the cylinders

    D

    Four-stroke；pistons and cylinders


    正确答案： D
    解析： 暂无解析

  • 第20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21题：

    单选题
    The marine bill of lading normally issued by （）.
    A

    theshipowner

    B

    thecarrier

    C

    theshipper

    D

    theconsigner


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    Pistons of marine medium speed diesel engines may be made of （） in order to keep the weight down for balancing purpose at high speed.
    A

    lead

    B

    forged steel

    C

    alloy steel

    D

    aluminum alloy


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    Modern marine diesel engines equipped with mechanical fuel injection operate on a combustion phase within the cycle which is（）
    A

    entirely constant pressure

    B

    entirely constant temperature

    C

    a combination of constant volume and constant pressure

    D

    a combination of constant temperature and constant pressure


    正确答案： C
    解析： 暂无解析

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