A high rate of separation between oil and water is favored by ______.A.large size of oil globule(小球)B.low temperatureC.high viscosityD.high flow rate

题目

A high rate of separation between oil and water is favored by ______.

A.large size of oil globule(小球)

B.low temperature

C.high viscosity

D.high flow rate

相似考题

1.With the price of oil _______, the economy of oil－producing countries is expanding at a high rate.A.going upB.goes upC.gone upD.to go up

2.Injectors for use with heavy fuel oil must be cooled by either water or light oil to_____.A.prevent heat corrosion to internal componentsB.increase fuel delivery rate and economyC.prevent pre-ignitionD.avoid carbonization of the nozzle tips

3.Coalescence(聚合) is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and ______in size.A.expandB.extractC.increaseD.decrease

4.One of the reasons that causes oil flowed from sludge outlet of a self-cleaning purifier isA.seal water supply be cut offB.make-up water supply be cut offC.oil outlet valve closed or not open sufficientlyD.the flow rate of oil is too much

更多“A high rate of separation between oil and water is favored by ______.A.large size of oil g ”相关问题

  • 第1题：

    An oil tanker operating with dedicated clean ballast tanks shall be equipped with ______，approved by the Administration on the basis of specification recommended by the Organization，to enable supervision of the oil content in ballast water being discharged．

    A.An oil content meter

    B.An oil checker

    C.An analyzer of oil content

    D.A mixer of oily water


    正确答案：A

  • 第2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3题：

    单选题
    If the cooling water temperature and the lube oil temperature in a diesel engine are too high, the cause can be （）
    A

    a dirty lube oil strainer

    B

    internal water leaks

    C

    an oil suction line restriction

    D

    excessive wears of the cooling water pump


    正确答案： B
    解析： 暂无解析

  • 第4题：

    单选题
    What type of oil is not covered in the oil pollution law?（）
    A

    mineral oil

    B

    machinery oil being transferred for shipboard use

    C

    crude oil unrefined

    D

    normal bilge oil and water


    正确答案： A
    解析： 暂无解析

  • 第5题：

    单选题
    Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil?（）
    A

    Water discharging from the water outlet of the lube oil purifier

    B

    Fuel oil discharging from the water outlet of the lube oil purifier

    C

    Lube oil discharging from the water outlet of the lube oil purifier

    D

    A change in the lube oil viscosity


    正确答案： C
    解析： 暂无解析

  • 第6题：

    单选题
    Injectors for use with heavy fuel oil must be cooled by either water or light oil to （）
    A

    prevent heat corrosion to internal components

    B

    increase fuel delivery rate and economy

    C

    prevent pre-ignition

    D

    avoid carbonization of the nozzle tips


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    Which of the following statements is true concerning an oil cooler?（）
    A

    The oil temperature is less than the cooling water temperature

    B

    The oil pressure is less than the cooling water pressure

    C

    The oil pressure is greater than the cooling water pressure

    D

    The oil flow control valve is always installed in the oil input line


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    The principle of separation by which all commercially available oily water separators function is （） differential between oil and water.
    A

    the temperature

    B

    the viscosity

    C

    the gravity

    D

    the size


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
    A

    seal water supply be cut off

    B

    make up water supply be cut off

    C

    oil outlet valve closed or not open sufficiently

    D

    the flow rate of oily water is too much


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    When bilge water is heated in a holding tank, which one of the following statements is not accurate?（）
    A

    The high temperature facilitates primary gravity separation

    B

    Most of the oil and organic solvents are raised to the top layer

    C

    The high the temperature is, the more the top oil will be collected

    D

    The high temperature has little use on the separation of emulsified oil


    正确答案： D
    解析： 暂无解析

  • 第11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12题：

    单选题
    Before the sludge in a purifier is ejected,（）
    A

    the oil feeding is stopped and replaced by admitting flushing water

    B

    the flushing water feeding is stopped and replaced by admitting oil

    C

    the feeding of dirty oil and flushing water is stopped

    D

    the feeding of dirty oil and flushing water is admitted


    正确答案： A
    解析： 暂无解析

  • 第13题：

    OIL-IN-WATER are ______．

    A.sediment of oil in water

    B.oil dissolvents in water

    C.solid oil aggregates

    D.droplets of oil suspended in water


    正确答案：D

  • 第14题：

    单选题
    When you are transferring fuel oil to the setting tanks, precautions to be observed should include （）
    A

    plugging gooseneck tank vents to prevent accident overflow

    B

    maintaining a high transfer rate until a slight trickle of oil is observed flowing from the overflow line

    C

    sounding the tanks frequently and reducing the transfer rate as the level approaches maximum fill

    D

    maintaining a supply of chemical dispersant to cleanup minor oil spills adjacent to the ship


    正确答案： B
    解析： 暂无解析

  • 第15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16题：

    单选题
    An oil tanker operating with dedicated clean ballast tanks shall be equipped with（），approved by the Administration on the basis of specification recommended by the Organization，to enable supervision of the oil content in ballast water being discharged.
    A

    an oil content meter

    B

    an oil checker

    C

    an analyzer of oil content

    D

    a mixer of oily water


    正确答案： B
    解析： 暂无解析

  • 第17题：

    单选题
    An oil water monitor is required in order to measure （）.
    A

    the oil content in water

    B

    the water content in fuel oil

    C

    the water level in bilge well

    D

    the oil level in bilge well


    正确答案： D
    解析： 暂无解析

  • 第18题：

    单选题
    Demulsibility of a lube oil is defined as （）.
    A

    the ability of oil to separate from water

    B

    the temperature at which oil flows rapidly

    C

    a measure of the water in a lube oil system

    D

    an emulsion of different grades of oil


    正确答案： A
    解析： 暂无解析

  • 第19题：

    单选题
    The position of the interface between oil and water within the centrifuge is achieved by the use of （）.
    A

    gravity disc

    B

    centrifugal bowl

    C

    a stack of discs

    D

    main sealing ring


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    For a L√Opurifier, if the back pressure of the oil outlet is too high, the interface between oil and water in the bowl will （）.
    A

    be interrupted

    B

    move downwards

    C

    move outwards

    D

    retain original position


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    One of the reasons that causes oil flowed from sludge outlet of a self-cleaning purifier is （）
    A

    seal water supply be cut off

    B

    make-up water supply be cut off

    C

    oil outlet valve closed or not open sufficiently

    D

    the flow rate of oil is too much


    正确答案： D
    解析： 暂无解析

  • 第22题：

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

    maintain even distribution of bearing wear

    B

    maintain a constant oil temperature

    C

    maintain a pressurized film between moving surfaces

    D

    remove entrained water


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    Coalescence is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and （） in size.
    A

    expand

    B

    extract

    C

    increase

    D

    decrease


    正确答案： A
    解析： 暂无解析

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