单选题Which of the listed problems can be a cause of low compression pressure in a diesel engine?（）A clogged air filterB compression strokeC burned exhaust valvesD all of the above

题目
单选题
Which of the listed problems can be a cause of low compression pressure in a diesel engine?（）
A

clogged air filter

B

compression stroke

C

burned exhaust valves

D

all of the above

相似考题

1.Which of the listed conditions can be considered as the single greatest cause of accidents?A.SpeedB.Excessive knowledge or skillC.Human errorD.Excitement

2.One cylinder of a diesel engine is persistently knocking and does not cease(停止) when the fuel supply to that cylinder is secured.Which of the following problems may be the cause?A.Low loading of the cylinderB.Excessive cooling of that pistonC.Sluggish ring action on the pistonD.A mechanical defect in a working part

3.Which of the problems listed could cause erosion of the expansion valve disks and seats?A.Overcharging the system with refrigerantB.Faulty compressor suction valveC.Failure of the high pressure cutoutD.Flash gas formed in the liquid line

4.Which statement is true,as relates to classful or classless routing?()A.RIPV1 and OSPF are classless routing protocols.B.Classful routing protocols send the subnet mask in routing updates.C.Automatic summarization at classful boundaries can cause problems on disc……D.EIGRP and OSPF are classful routing protocols and summarize routes by def……

更多“Which of the listed problems can be a cause of low compressi”相关问题

  • 第1题：

    Which statement is true, as relates to classful or classless routing?（）

    • A、Automatic summarization at classful boundries can cause problems on discontinuous subnets
    • B、EIGRP and OSPF are classful routing protocols and summarize routes by default
    • C、RIPv1 and OSPF are classless routing protocols
    • D、Classful routing protocols send the subnet mask in routing updates

    正确答案:A

  • 第2题：

    Which of the following can cause a ribbon on an impact printer to tear?（）

    • A、The fuser
    • B、The toner cartridge
    • C、The platen
    • D、The printhead

    正确答案:D

  • 第3题：

    单选题
    Which of the problems listed could be indicated if a sight glass in the refrigerant liquid line is full of bubbles?（）
    A

    Proper refrigerant charge

    B

    Faulty expansion valve

    C

    Insufficient refrigerant

    D

    Solenoid valve stuck open


    正确答案： C
    解析： 暂无解析

  • 第4题：

    单选题
    In a closed cooling water system, which of the problems can cause the water pressure to fluctuate?（）
    A

    An open vent in the cooling system

    B

    A fouled sea chest

    C

    A restricted water passage in the engine

    D

    Air entrained in the cooling water


    正确答案： D
    解析： 暂无解析

  • 第5题：

    单选题
    Which of the listed conditions can cause a diesel engine to use too much lube oil?（）
    A

    Dirty lube oil filter

    B

    Too much piston ring wear

    C

    High lube oil viscosity

    D

    Low lube oil temperature


    正确答案： D
    解析： 暂无解析

  • 第6题：

    单选题
    In order to accurately measure very low pressures, which of the instruments listed should be used?（）
    A

    Compound gage

    B

    Bonrdon tube

    C

    Manometer

    D

    Deadweight gage


    正确答案： C
    解析： 暂无解析

  • 第7题：

    单选题
    Which of the listed conditions can cause lacquer to be deposited on a piston skirt?（）
    A

    High sulphur content fuel

    B

    High lube oil temperatures

    C

    High vanadium content fuel

    D

    Excessive piston slap


    正确答案： B
    解析： 暂无解析

  • 第8题：

    单选题
    Which of the listed conditions can be considered as the single greatest cause of accidents?（）
    A

    Speed

    B

    Excessive knowledge or skill

    C

    Human error

    D

    Excitement


    正确答案： B
    解析： 暂无解析

  • 第9题：

    单选题
    Which of the following problems can cause an above normal air temperature to develop in the intake manifold of a turbocharged and after-cooled diesel engine?（）
    A

    Faulty turbocharger turbine diffuser ring

    B

    Faulty turbocharger compressor ring

    C

    Insufficient cooling water flow

    D

    Clogged air intake filters


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    Which of the following problems can cause fluctuating pressures in the closed cooling system of a main propulsion diesel engine?（）
    A

    Defective temperature controls in the system

    B

    Cavitation in the cooling water pump

    C

    Opened vent in the cooling system

    D

    Restricted water passages in the engine


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    Too much tourism can cause all these problems EXCEPT _____.
    A

    a bad impact on other industries

    B

    a change of tourists' customs

    C

    overcrowdedness of places of interest

    D

    pressure on traffic


    正确答案： D
    解析：

  • 第12题：

    单选题
    A server is having problems booting into the operating system. Which of the following can provide important information to begin to troubleshoot the cause?（）
    A

    System logs

    B

    Firmware updates

    C

    POST messages

    D

    Application logs


    正确答案： B
    解析： 暂无解析

  • 第13题：

    Which statement is true, as relates to classful or classless routing?（）

    • A、RIPV1 and OSPF are classless routing protocols.
    • B、Classful routing protocols send the subnet mask in routing updates.
    • C、Automatic summarization at classful boundaries can cause problems on disc……
    • D、EIGRP and OSPF are classful routing protocols and summarize routes by def……

    正确答案:C

  • 第14题：

    A server is having problems booting into the operating system.  Which of the following can provide important information to begin to trouble shoot the cause？（）

    • A、 System logs
    • B、 Firmware updates
    • C、 POST messages
    • D、 Application logs

    正确答案:C

  • 第15题：

    单选题
    When lighting off an auxiliary boiler, which of the problems listed could cause the burners to sputter?（）
    A

    cold fuel oil

    B

    low fuel oil pressure

    C

    low atomizing steam pressure

    D

    water in the fuel oil


    正确答案： C
    解析： 暂无解析

  • 第16题：

    单选题
    Which of the listed chemicals can be routinely used to maintain the hygienic quality of potable water?（）
    A

    Hydrochloric acid

    B

    Chlorine

    C

    Sulfuric acid

    D

    Zinc chromate


    正确答案： D
    解析： 暂无解析

  • 第17题：

    单选题
    Which of the listed operations will cause an automatically controlled refrigeration compressor to restart?（）
    A

    Closing of the solenoid valve

    B

    Closing of the expansion valve

    C

    An increase in the suction pressure

    D

    Decreasing the suction pressure


    正确答案： B
    解析： 暂无解析

  • 第18题：

    单选题
    Which of the listed substances can be satisfactorily removed from diesel fuel by centrifuging?（）
    A

    Sludge

    B

    Gasoline

    C

    Fuel oil

    D

    Lube oil


    正确答案： A
    解析： 暂无解析

  • 第19题：

    单选题
    Which of the conditions listed could cause the cylinder relief valves on a large, low-speed, propulsion diesel engine to lift?（）
    A

    Plugged injector nozzles

    B

    Excessive fuel injection

    C

    Very late injection timing

    D

    Incorrect crankshaft clearance


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    A server is having problems booting into the operating system.  Which of the following can provide important information to begin to trouble shoot the cause？（）
    A

     System logs

    B

     Firmware updates

    C

     POST messages

    D

     Application logs


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    In order to distribute the side pressures over a wide area of the cylinder walls and liners, which of the listed types of pistons are used in modem low pressure air compressors?（）
    A

    Differential

    B

    Trunk

    C

    Barrel

    D

    Valve-in-head


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    When a fuel injection nozzle overheats, which of the problems listed can be expected?（）
    A

    The fuel metering will vary

    B

    The fuel will explode

    C

    The cylinder head will crack

    D

    The engine will stop


    正确答案： C
    解析： 暂无解析

  • 第23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

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