单选题Diesel engines are started by supplying （） into the cylinders in the appropriate sequence for the required direction.A fuel oilB diesel oilC compressed airD jacket water

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

fuel oil

B

diesel oil

C

compressed air

D

jacket water

相似考题

1.An efficient seal between the cylinder block and cylinder heads on many diesel engines is obtained with________.A.graphite packingB.sealing compoundC.lubricating oilD.gaskets

2.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

3.单选题Compared to four-stroke/cycle engines, two-stroke/cycle diesel engines have the disadvantage of （）A less even torqueB higher cylinder head temperaturesC fewer power strokes per revolutionD greater weight/size requirements

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“Diesel engines are started by supplying （） into the cylinder”相关问题

  • 第1题：

    单选题
    Heat damage to fuel injection nozzles on small high-speed diesel engines, can be prevented by（）
    A

    employing fuel oil as a cooling medium

    B

    preventing hard carbon deposit on nozzle tips

    C

    avoiding fuel oil temperature exceeding builder’s specification

    D

    ensuring good metallic contact between nozzles and cylinder heads


    正确答案： D
    解析： 暂无解析

  • 第2题：

    单选题
    Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）
    A

    starting the engine while hot

    B

    knurling the piston skirt

    C

    operating the engine overheated

    D

    scuff resistant piston rings


    正确答案： D
    解析： 暂无解析

  • 第3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4题：

    单选题
    Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）
    A

    chromium plating piston rings

    B

    knurling the piston skirt

    C

    extended maximum power operation

    D

    applying load to a cold diesel engine


    正确答案： D
    解析： 暂无解析

  • 第5题：

    单选题
    For Vee-form engines, （） is shaped to given two slopping surface on which （） are placed at the correct relative angle to each other.
    A

    the bottom of the column；the cylinder blocks

    B

    the top of the column；the cylinder heads

    C

    the top of the column；the cylinder blocks

    D

    the bottom of the column；the cylinder heads


    正确答案： B
    解析： 暂无解析

  • 第6题：

    单选题
    A diesel engine is warmed up and white vapor is in the exhaust，this could indicate （）
    A

    excessive cylinder lubrication

    B

    a lugging engine

    C

    a leaking cylinder liner

    D

    overloading of one cylinder


    正确答案： B
    解析： 暂无解析

  • 第7题：

    单选题
    An efficient seal between the cylinder block and cylinder heads on many diesel engines is obtained with（）
    A

    graphite packing

    B

    sealing compound

    C

    lubricating oil

    D

    gaskets


    正确答案： B
    解析： 暂无解析

  • 第8题：

    单选题
    The principal difference between loop scavenging and crossflow scavenging, as used in single acting diesel engines, is the （）
    A

    direction of air flow within the cylinder

    B

    sequence of port opening

    C

    method of opening exhaust ports

    D

    volume of air admitted to the cylinder


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    If a four-stroke/cycle diesel engine is started by injecting air into the cylinder, the pistons receiving the charge of starting air must be（）
    A

    on the power stroke

    B

    on the exhaust stroke

    C

    at the end of the power stroke

    D

    at the start of the intake stroke


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    The process of supplying a diesel engine cylinder with air at a pressure greater than atmospheric is called（）.
    A

    engine displacement

    B

    super-aspirating

    C

    air injection

    D

    supercharging


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    Diesel engine cylinder head test cocks are used to （）
    A

    check cylinder lubrication

    B

    connect the pressure indicator pressure

    C

    test cylinder heads

    D

    connect the exhaust gas pyrometers


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    The main operating characteristic of diesel engines which distinguishes them from other internal combustion engines is the （）
    A

    method of supplying air

    B

    cooling system

    C

    method of igniting fuel

    D

    valve operating mechanism


    正确答案： A
    解析： 暂无解析

  • 第13题：

    单选题
    Air scavenging of a diesel engine cylinder（）
    A

    blows out the exhaust gases

    B

    supplies oxygen for combustion

    C

    cools the valves and cylinder walls

    D

    all of the above


    正确答案： C
    解析： 暂无解析

  • 第14题：

    单选题
    One end of a diesel engine cylinder is sealed by the cylinder head and the other end by the （）
    A

    crankcase

    B

    piston

    C

    cylinder liner

    D

    crank cheek


    正确答案： B
    解析： 暂无解析

  • 第15题：

    单选题
    When an air started, four-stroke/cycle diesel engine is being cranked, the starting air is admitted to each cylinder during what would normally be the（）
    A

    intake stroke

    B

    compression stroke

    C

    power stroke

    D

    exhaust stroke


    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
    If water is found in the crankcase of a diesel engine, the cause may be due to（）
    A

    a cracked cylinder head

    B

    a leaky cylinder head gasket

    C

    a cracked cylinder liner

    D

    any of the above


    正确答案： A
    解析： 暂无解析

  • 第18题：

    单选题
    Some diesel engines are supercharged with a （）
    A

    slam charger

    B

    turbocharger

    C

    fuel atomizer

    D

    fuel injector


    正确答案： B
    解析： 暂无解析

  • 第19题：

    单选题
    What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
    A

    Spark plug

    B

    Heat of compression

    C

    Carburetor

    D

    Glow plug


    正确答案： B
    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
    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22题：

    单选题
    Fuel injected into a diesel engines cylinder is ignited by （）.
    A

    the heat compressed fuel/air mixture in the cylinder

    B

    the fuel igniter

    C

    the fuel injector

    D

    the fuel pump


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    Turbocharged four-stroke/cycle diesel engines utilize valve overlap for（）.
    A

    improving cylinder scavenging

    B

    preheating the combustion chamber

    C

    reducing air charge density

    D

    preventing valve wear


    正确答案： C
    解析： 暂无解析

  • 第24题：

    单选题
    Cylinder lubrication oil for low speed main propulsion diesel engines is admitted to each cylinder during （）.
    A

    the power stroke

    B

    the compression stroke

    C

    low load operation only

    D

    periods of standby


    正确答案： D
    解析： 暂无解析

相关内容