单选题Propulsion engines and the vast majority of auxiliary generator engines are designed to allow a generous through-flow of scavenge air in order to control （）A the lubricating oil consumptionB the turbine blade temperatureC the flow rate of fuelD scaveng

题目
单选题
Propulsion engines and the vast majority of auxiliary generator engines are designed to allow a generous through-flow of scavenge air in order to control （）
A

the lubricating oil consumption

B

the turbine blade temperature

C

the flow rate of fuel

D

scavenge air pressure

相似考题

1.Motor-propelled lifeboats are required to be fitted with which of the following?______.A.Compartments for the storage of canned drinking waterB.Ballast tanks to prevent the boat from capsizingC.An air starter on the diesel engineD.Auxiliary mechanical propulsion ( Fleming gear )

2.Crankcase explosions in propulsion diesel engines result from ____.A.the splashing of lubrication oil by the crankshaftB.the dilution of crankcase oil with particles of combustionC.broken fuel lines spraying oil on the crankcaseD.the ignition of unburned fuel and air in the crankcase

3."... generation gap is narrowing" means" ______".A. the adolescents now become timidB. parents used to get along with their childrenC. the vast majority of teenagers share most of their parents' values and ideasD. parents and teenagers don't like to quarrel

4.Main engines as well as auxiliary engines operating on heavy fuel should have continuousoon the lubricating oil, either according tothebypass or batch principlesA.filteringB.centrifugingC.depositingD.operating

更多“Propulsion engines and the vast majority of auxiliary genera”相关问题

  • 第1题：

    A light siglinal consisting of three flashes means ______.

    A.I an in doubt as to your actions

    B.My engines are full speed astern

    C.I desire to overtake you

    D.I am operating astern propulsion


    正确答案：D
    由三闪组成的灯光信号，表示我船正在后退。

  • 第2题：

    单选题
    Who is in charge of the auxiliary engines?（）
    A

    The chief engineer

    B

    The second engineer

    C

    The third engineer

    D

    The fourth engineer


    正确答案： C
    解析： 暂无解析

  • 第3题：

    单选题
    Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
    A

    wheelhouse control station

    B

    engine room control station

    C

    captains office

    D

    chief engineers office


    正确答案： B
    解析： 暂无解析

  • 第4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5题：

    单选题
    Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
    A

    increasing the volume of intake air

    B

    shutting off the fuel supply

    C

    increasing the engine back pressure

    D

    over-speeding the engine


    正确答案： A
    解析： 暂无解析

  • 第6题：

    单选题
    Exhaust pipes for separate diesel engines can be combined only when （）
    A

    space limitations prevent separately run pipes

    B

    the engines are small auxiliary units

    C

    they are arranged to prevent gas backflow to each engine

    D

    a waste heat boiler is installed


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    Starting air for auxiliary engines may be taken directly from the main reservoirs or through （）.
    A

    an auxiliary reservoir

    B

    a controlling air bottle

    C

    an emergency air compressor

    D

    a main air compressor


    正确答案： B
    解析： 暂无解析

  • 第8题：

    单选题
    Which of the following statements concerning the lubrication of diesel propulsion engines used in vessels over 300 gross tons is most accurate?（）
    A

    Lubrication systems using engine driven lube oil pumps do not require any additional independent arrangement when such arrangements have been proven reliable

    B

    The use of engine driven pre-lube pumps is permitted on vessels with propulsion systems developing less than 500 shaft horsepower

    C

    When forced lubrication is used for propulsion engines, one independently driven stand-by pumps is to be provided in addition to the necessary pumps for normal operation

    D

    Lubrication systems where two oil coolers are fitted require a minimum of two temperature control devices which may be actuated by similar sensors


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    Which of the listed types of starting systems is often used on large, low-speed, direct reversing, main propulsion diesel engines?（）
    A

    Electric

    B

    Hydraulic

    C

    Air

    D

    All of the above


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    About the jacket water, that of the auxiliary engines usually（） is circulated by pumps, and the main engine usually （）
    A

    an engine-driven；as well

    B

    an engine-driven；has an independent pump

    C

    an independent；as well

    D

    an independent；has an engine-driven pump


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    A donkey boiler is （）.
    A

    one to supply steam to the main propulsion turbine

    B

    an auxiliary boiler

    C

    A and B

    D

    neither A nor B


    正确答案： C
    解析： 暂无解析

  • 第12题：

    单选题
    An auxiliary reservoir for starting auxiliary engines should be kept at （）.
    A

    low pressure at all times

    B

    full pressure at all times

    C

    low pressure at intermittence

    D

    full pressure at intermittence


    正确答案： B
    解析： 暂无解析

  • 第13题：

    单选题
    Auxiliary diesel engines can be automatically shut down as a result of （）
    A

    low lube oil temperature

    B

    low lube oil pressure

    C

    high exhaust temperature

    D

    high cooling water pressure


    正确答案： C
    解析： 暂无解析

  • 第14题：

    单选题
    For most diesel propulsion and generator engines, the over-speed trip device will stop the engine by （）
    A

    moving the governor control to stop

    B

    shutting off the lubricating oil supply

    C

    tripping the governor emergency stop lever

    D

    shutting off the fuel supply


    正确答案： D
    解析： 暂无解析

  • 第15题：

    单选题
    Thermocouple pyrometers are used on large, main propulsion diesel engines to indicate the temperature of the（）
    A

    cooling water leaving each cylinder

    B

    fuel oil entering the injector

    C

    exhaust gases at various locations

    D

    lube oil at the bearing supplies


    正确答案： A
    解析： 暂无解析

  • 第16题：

    单选题
    When the general alarm is sounded continuously, the engine room personnel should （）.
    A

    proceed to their man overboard stations

    B

    start the fire pump

    C

    put on lifejackets and go to their abandon ship stations

    D

    secure the propulsion diesel engines and evacuate the engine room


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    Main engines as well as auxiliary engines operating on heavy fuel should have continuous on the lubricating oil, either according to the bypass or batch principles（）
    A

    filtering

    B

    centrifuging

    C

    depositing

    D

    operating


    正确答案： B
    解析： 暂无解析

  • 第18题：

    单选题
    The booster pump, which supplies diesel oil to（） , should have a possibility of being powered by compressed air or by emergency power.
    A

    the main engines

    B

    the auxiliary engines

    C

    the emergency generator engine

    D

    the auxiliary engines and the main engine(s)


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    Propulsion of the vast majority of contemporary merchant ships (especially containerships and VLCCs) utilizes（） as prime mover.
    A

    gas turbine

    B

    diesel engine

    C

    steam engine

    D

    gasoline engine


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    The “generation gap is narrowing” means _____.
    A

    the adolescents now become timid

    B

    parents come to get along with their children

    C

    the vast majority of teenagers share most of their parents’ values and ideas

    D

    parents and teenagers don’t like to quarrel


    正确答案： C
    解析：
    信息题。在该句后面作者进行了解释“The vast majority of teenagers share most of their parents’ values and ideas”。

  • 第21题：

    单选题
    Cast iron pistons used in large propulsion diesel engines are constructed with （）
    A

    not taper what so ever

    B

    the skirt being tapered and smaller than the crown

    C

    the skirt being tapered and larger than the crown

    D

    the crown being tapered and smaller than the skirt


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    During the watch keeping at sea, at appropriate intervals inspection should be made of （）, auxiliary machinery and steering gear spaces by the duty engineer.
    A

    the main propulsion plant

    B

    lifesaving jackets

    C

    lifeboat engine

    D

    state of emergency generator


    正确答案： A
    解析： 暂无解析

  • 第23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

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