单选题The rate of cylinder lubricating oil metered to each cylinder of a large low-speed main propulsion diesel engine is （）A the same, whether at sea, or during maneuveringB adjusted during each hour of operation while at constant RPMC higher at sea than wh

题目
单选题
The rate of cylinder lubricating oil metered to each cylinder of a large low-speed main propulsion diesel engine is （）
A

the same, whether at sea, or during maneuvering

B

adjusted during each hour of operation while at constant RPM

C

higher at sea than while maneuvering

D

lower at sea than while maneuvering

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.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 scavenge air pressure

3.单选题The primary purpose of oil control rings on a diesel piston is to（）A provide a reservoir for cylinder lubricationB pump oil into the combustion space for cylinder coolingC prevent excessive lubricating oil consumptionD allow hydraulic oil film formation on the cylinder

4.The main factor which determines the output of each cylinder is _____.A.the cylinder weightB.the cylinder boreC.the cylinder lengthD.the cylinder cover

更多“The rate of cylinder lubricating oil metered to each cylinde”相关问题

  • 第1题：

    单选题
    A high rate of separation between oil and water is favored by （）.
    A

    large size of oil globule

    B

    low temperature

    C

    high viscosity

    D

    high flow rate


    正确答案： B
    解析： 暂无解析

  • 第2题：

    单选题
    One characteristic of a lubricating oil adversely affecting the result of centrifuging is （）
    A

    high TBN value

    B

    low oil floc point

    C

    low oil demulsibility

    D

    low oil neutralization number


    正确答案： A
    解析： 暂无解析

  • 第3题：

    单选题
    Cylinder wall temperature, fuel oil supplier, and oil passage （）.
    A

    are interdependent

    B

    are not interdependent

    C

    have nothing to do with each other

    D

    are independent


    正确答案： C
    解析： 暂无解析

  • 第4题：

    单选题
    （） is used for cylinder and cylinder head, the salt water is used for cooling the lubricating oil, the fresh water in the coolers and the charging air in the air cooler.
    A

    The fuel oil

    B

    The lube oil

    C

    The sea water

    D

    The fresh water


    正确答案： C
    解析： 暂无解析

  • 第5题：

    单选题
    It is very necessary that each cylinder （） before the charged air is compressed.
    A

    is scavenged

    B

    is atomized with fuel oil

    C

    be scavenged

    D

    be atomized with fuel oil


    正确答案： B
    解析： 暂无解析

  • 第6题：

    单选题
    The lubricating system for the cylinder walls is different from the bearings in that the oil for former one is supplied in （） while that for latter one is （）.
    A

    sufficient quantity； measured

    B

    measured quantity；sufficient

    C

    excessive quantity；sufficient

    D

    the less quantity the better；the more the better


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    On engines having oil cooled pistons the lubricating oil pre-heater must be put into operation and the rate of heating so （） that the temperature of the piston cooling oil returns are 32℃ to 35℃ over a period of at least two hours.
    A

    slow

    B

    quick

    C

    arranged

    D

    high


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    The （）should be kept running for about half an hour after FWE.
    A

    crankcase lubricating oil pump

    B

    fuel oil pump

    C

    air compressor

    D

    auxiliary blower


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    In a normally operating diesel engine, the main cause of lubricating oil contamination in the crankcase is a result of the （）.
    A

    metal particles loosened by wear

    B

    air when no air cleaners are used

    C

    condensation of water vapors

    D

    breakdown of the lubricating oil by dilution


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    The function of lubricating oil is to （）.
    A

    reduce friction between moving surfaces

    B

    provide even distribution of bearing wear

    C

    reduce the accumulation of harmful detergents

    D

    maintain a constant oil temperature output at each beating


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    Lubricating oil systems for diesel engine journal bearings are usually lubricated by which of the following types of lubricating oil systems?（）
    A

    Splash

    B

    Gravity

    C

    Pressure

    D

    Bypass


    正确答案： C
    解析： 暂无解析

  • 第12题：

    单选题
    The （）pump is usually used as the lubricating oil pump.
    A

    turbine

    B

    screw

    C

    vaneejector

    D

    centrifugal


    正确答案： C
    解析： 暂无解析

  • 第13题：

    单选题
    In addition to lubricating, cylinder oil assists in forming a gas seal and contains （） which clean the cylinder liner.
    A

    additives

    B

    water

    C

    grease

    D

    acid solution


    正确答案： A
    解析： 暂无解析

  • 第14题：

    单选题
    Excessive lubricating oil consumption in a running diesel engine can be caused by （）
    A

    clogged lube oil piping

    B

    excessive valve-guide clearance

    C

    high lube oil viscosity

    D

    low lube oil temperature


    正确答案： A
    解析： 暂无解析

  • 第15题：

    单选题
    The oil pressure and flow from each bearings can be checked when（）
    A

    the lubricating pumps are stopped and the access doors are opened

    B

    the lubricating pumps are running and the access doors are opened

    C

    the engine is running and the access doors are closed

    D

    the engine is stopped and the access doors are closed


    正确答案： B
    解析： 暂无解析

  • 第16题：

    单选题
    The cylinder oil is pumped into the cylinder (via non-return valves) when the piston rings pass the lubricating orifices during （）
    A

    the upward stroke

    B

    the downward stroke

    C

    the power stroke

    D

    the suction stroke


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    （） for the camshaft gear train is taken from a spur gear which for a six cylinder engine is at the coupling end.
    A

    The driven gear

    B

    The drive

    C

    The grease

    D

    The lubricating oil


    正确答案： D
    解析： 暂无解析

  • 第18题：

    单选题
    The amount of fuel delivered for each cycle must be in accordance with the engine load, and the same quantity of fuel must be delivered to each cylinder for each power stroke at that load.Which of the following statements describes this requirement?（）
    A

    Proper timing

    B

    Accurate metering

    C

    Suitable injection rate

    D

    Suitable atomization rate


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    If it becomes necessary to cutout an individual cylinder of a large, low-speed, main propulsion diesel engine, the fuel to that cylinder should be secured and its （）
    A

    fuel pump should be removed and all connections blanked off

    B

    cylinder oil feed rate should be increased slightly above that used at normal sea speed

    C

    cylinder oil feed rate should be reduced

    D

    cylinder oil feed rate should be increased to the maximum flow capable of the metering pump


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    Engine coolant accumulating in the diesel engine lubricating oil can result from a （）
    A

    low oil pressure

    B

    high coolant pressure

    C

    leaking fuel injector

    D

    cracked cylinder head or liner


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    Lubricating oil viscosity in an operating diesel engine can be reduced by（）
    A

    increasing cooling water flow

    B

    increasing lube oil flow

    C

    dilution by fuel oil

    D

    adding SAE 70 oil


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    One of function of diesel engine lubricating oil is to （）
    A

    induce carbon formation on cylinder walls

    B

    improve fuel penetration in the combustion space

    C

    form a friction reducing film between mating surfaces

    D

    lubricate the fuel injection


    正确答案： B
    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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