When an auxiliary boiler is panting and emitting(发出) black smoke, you should______.A.increase the fuel oil temperatureB.decrease the fuel oil temperatureC.decrease the fuel oil supply pressureD.increase the air supply

题目

When an auxiliary boiler is panting and emitting(发出) black smoke, you should______.

A.increase the fuel oil temperature

B.decrease the fuel oil temperature

C.decrease the fuel oil supply pressure

D.increase the air supply

相似考题

1.The correct procedure for giving an auxiliary boiler a bottom blow, is to begin .A.when the boiler has been secured long enough for most solids to settleB.when the boiler has been cooled to ambient temperatureC.only after raising the water level to within 0.5 inch of the high water cutout onlyD.after bypassing the low pressure

2.what chemicals did you use to treat the boiler water ?when you test alkalinity and acidity of water in boiler by pH test paper ? the result shows the boiler water is in acidiity . please describe what the possible cause is .

3.When issuing the duplicate database command， you use the parameter DB_FILE_NAME_CONVERT. For what purpose do you use this parameter？（）  A、 To indicate the location of the auxiliary-instance online redo logs.B、 To indicate the location of the target database datafiles.C、 To indicate the location of the auxiliary-instance control file and online redo logs.D、 To indicate the location of the auxiliary-instance database datafiles.E、 This is not a valid parameter when duplicating a database.

4.Have you ever served the auxiliary engine to combustion heavy oil? What should be borne in mind when transferring oil; from heavy oil to light oil?

更多“When an auxiliary boiler is panting and emitting(发出) black smoke, you should______.A.inc ”相关问题

  • 第1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2题：

    单选题
    Black smoke coming from a boiler can be caused by （）.
    A

    low water level

    B

    high water level

    C

    excessively high fuel pressure

    D

    low oil temperature


    正确答案： B
    解析： 暂无解析

  • 第3题：

    单选题
    When an auxiliary boiler is panting and emitting black smoke, you should （）.
    A

    increase the fuel oil temperature

    B

    decrease the fuel oil temperature

    C

    decrease the fuel oil supply pressure

    D

    increase the air supply


    正确答案： A
    解析： 暂无解析

  • 第4题：

    单选题
    The water in an auxiliary boiler should be tested daily for （）.
    A

    dissolved oxygen

    B

    chlorides

    C

    sludge

    D

    dissolved nitrogen


    正确答案： C
    解析： 暂无解析

  • 第5题：

    单选题
    The fuel oil supply system to an automatic auxiliary boiler, will automatically shutdown if the boiler （）
    A

    steam demand is high

    B

    salinity is high

    C

    safety valve simmers

    D

    burner flame is extinguished


    正确答案： C
    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
    A burner responsible for producing black smoke in an automatic auxiliary boiler, would be caused by a （）
    A

    defective solenoid valve

    B

    dirty fuel nozzle

    C

    grounded high tension lead

    D

    faulty ignition cable connector


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    The boiler water alkalinity in a coil-type auxiliary boiler should be maintained at the pH recommended by the boiler manufacturer to（）
    A

    precipitate silica from solution

    B

    reduce corrosion in the heating coil

    C

    prevent clogging and erosion in the coil

    D

    maintain zero water hardness


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    Black smoke coming from a boiler can be caused by （）.
    A

    low water level

    B

    low oil pressure

    C

    excessively high fuel pressure

    D

    an improper air/fuel ratio


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause maybe （）.
    A

    high steam pressure in the boiler

    B

    abnormally high feed water temperature

    C

    abnormally high boiler water temperature

    D

    steam demand exceeding feed pump capacity


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    Before an auxiliary boiler is shutdown for an extended period of time, the water in the boiler should have a pH value of （）.
    A

    10

    B

    7

    C

    4

    D

    1


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    Which action should be taken when an auxiliary boiler in is operation?（）
    A

    Clean all electrical connections

    B

    Lift the relief valves by hand

    C

    Inspect and clean all solenoid valves

    D

    Inspect for oil and water leaks


    正确答案： B
    解析： 暂无解析

  • 第13题：

    单选题
    When issuing the duplicate database command， you use the parameter DB_FILE_NAME_CONVERT. For what purpose do you use this parameter？（）
    A

     To indicate the location of the auxiliary-instance online redo logs.

    B

     To indicate the location of the target database datafiles.

    C

     To indicate the location of the auxiliary-instance control file and online redo logs.

    D

     To indicate the location of the auxiliary-instance database datafiles.

    E

     This is not a valid parameter when duplicating a database.


    正确答案： C
    解析： 暂无解析

  • 第14题：

    单选题
    In the event of a flame failure in an auxiliary water-tube boiler, you must（）
    A

    relight the boiler immediately to prevent loss of steam pressure

    B

    relight the fire off the brickwork as the bricks are cherry red

    C

    purge the furnace of any combustible gases before attempting to relight the fire

    D

    speed up the feed pump to prevent dry firing when the burner flame is reestablished


    正确答案： C
    解析： 暂无解析

  • 第15题：

    单选题
    High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by （）.
    A

    engine overload

    B

    low combustion temperature

    C

    plugged fuel nozzle holes

    D

    excessive compression pressure


    正确答案： C
    解析： 暂无解析

  • 第16题：

    单选题
    The fuel supply system to an automatic auxiliary boiler, will be automatically shutdown if the boiler （）
    A

    salinity is abnormally high

    B

    steam demand is too high

    C

    water level is abnormally low

    D

    feedwater flow is low


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    When there is a flame failure in an automatically fired auxiliary boiler, the （）.
    A

    air supply is shut off

    B

    fuel supply is shut off

    C

    water supply is shut off

    D

    safety valve lifts


    正确答案： A
    解析： 暂无解析

  • 第18题：

    单选题
    A （） boiler is an auxiliary boiler sometimes included in a steamships installation for supplying steam to auxiliaries in port.
    A

    monkey

    B

    donkey

    C

    waste heat

    D

    main


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    The water level in a steaming auxiliary boiler will always （）
    A

    rise when the steam pressure is increased

    B

    remain constant as long as the feed pump operates

    C

    fall when the steam pressure is decreased

    D

    vary as the steam demand changes


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    Excessive alkalinity of the water in an auxiliary boiler can cause （）.
    A

    caustic embrittlement of the boiler metal

    B

    acidic corrosion of the boiler metal

    C

    hard scale deposits on the boiler tubes

    D

    etching of the heat exchange surfaces


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    If you observe smoke coming from the turbocharger of an auxiliary diesel engine, you should（）
    A

    check the air filter for obstruction

    B

    check for an exhaust leak

    C

    check the exhaust temperature

    D

    secure the engine


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    Prior to lighting off a cold automatically fired auxiliary boiler, you should （）.
    A

    check and regulate the water level

    B

    close the air cock once fires are lit

    C

    blowdown the gage glass

    D

    crack the steam stop to assure protective steam flow


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    If an operating auxiliary boiler has a water pH reading of 7, you should （）.
    A

    bottom blow the boiler

    B

    treat the water with caustic soda

    C

    treat the water with chemical scavengers

    D

    reduce the water alkalinity to recommended readings


    正确答案： C
    解析： 暂无解析

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