niusouti.com

The（auto）ignition temperature is that temperature at which ______．A.No spark or flame is required to ignite gas or vaporB.A fuel begins to give off explosive vaporsC.A fuel if ignited will continue to burnD.A 1% mixture of the fuel with air will explode

题目

The（auto）ignition temperature is that temperature at which ______．

A.No spark or flame is required to ignite gas or vapor

B.A fuel begins to give off explosive vapors

C.A fuel if ignited will continue to burn

D.A 1% mixture of the fuel with air will explode

相似考题

1.The lowest temperature at which the vapor formed from a liquid ignites and continues to burn steadily in the presence of an ignition source is called the( ).A.flash pointB.fire pointC.upper explosive limitD.lower explosive hmlt

2.Which statement is TRUE concerning the flash point of a substance ________．A.It is lower than the ignition temperatureB.It is the temperature at which a substance will spontaneously igniteC.It is the temperature at which a substance，when ignited，will continue to burnD.It is the temperature at which the released vapors will fall within the explosive range

3.The lowest temperature required to cause self-sustained combustion of a substance independent of any outside source of ignition is called ______．A.Explosive rangeB.Flash pointC.Ignition temperatureD.Combustion temperature

4.Which command displays the current temperature of a Junos device's components?()A. show chassis temperature-thresholdsB. show chassis environmentC. show chassis hardwareD. show chassis alarms

参考答案和解析
正确答案：A
更多“The(auto)ignition temperature is that temperature at which ______.A.No spark or flame is r ”相关问题

  • 第1题：

    The minimum temperature required to ignite gas or vapor without a spark or flame being present is called ______．

    A.Flash point

    B.Fire point

    C.Autoignition temperature

    D.Lower explosive limit


    正确答案：C

  • 第2题：

    单选题
    The (auto)ignition temperature is that temperature atwhich（）.
    A

    no spark or flame is required to ignite gas or vapor

    B

    a fuel begins to give off explosive vapors

    C

    a fuel if ignited will continue to burn

    D

    a 1% mixture of the fuel with air will explode


    正确答案： B
    解析： 暂无解析

  • 第3题：

    单选题
    The dew point temperature is（）.
    A

    always higher than the air temperature

    B

    always lower than the air temperature

    C

    equal to the difference between the wet and dry bulb temperatures

    D

    the temperature at which the air is saturated with water vapor


    正确答案： D
    解析： 暂无解析

  • 第4题：

    单选题
    CFC refrigerants exposed to high temperature or direct flame, will decompose and may produce（）
    A

    methyl chloride

    B

    ammonia

    C

    hydrofluoric acid

    D

    ozone


    正确答案： B
    解析： 暂无解析

  • 第5题：

    单选题
    Which of the statements listed concerning heat transfer is correct?（）
    A

    Heat is always transferred at a constant rate

    B

    Heat transfer rate increases as temperature difference increases

    C

    The rate of heat transfer is not affected by temperature difference

    D

    The high temperature region is known as a heat sink


    正确答案： B
    解析： 暂无解析

  • 第6题：

    单选题
    The lowest temperature at which the vapor formed from a liquid ignites and continues to burn steadily in the presence of an ignition source is called the （）
    A

    flash point

    B

    fire point

    C

    upper explosive limit

    D

    lower explosive limit


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    The lowest temperature at which fuel combustion becomes self-sustaining in the presence of a source of ignition, is defined as the （）
    A

    auto-ignition point

    B

    flash point

    C

    burning temperature

    D

    fire point


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    Diesel fuel vapors （）.
    A

    can not be ignited by a spark unless the vapor is in a confined space

    B

    are nontoxic in all concentrations

    C

    can not be ignited by a spark unless they are at their auto-ignition temperature

    D

    are heavier than air


    正确答案： B
    解析： 暂无解析

  • 第9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10题：

    单选题
    The best method of extinguishing a class A fire is to （）.
    A

    remove oxygen from the area

    B

    smother fire with foam

    C

    smother fire with CO2

    D

    cool fuel below ignition temperature


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    Which of the following statements describes the relationship between flash point and ignition temperature?（）
    A

    Both are higher than normal burning temperatures

    B

    The flash point is always higher

    C

    The ignition temperature is always higher

    D

    They are not necessarily related


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    The lowest temperature at which a liquid gives off enough vapor to ignite in the presence of an ignition source is called its （）.
    A

    boiling point

    B

    flash point

    C

    viscosity point

    D

    toxic point


    正确答案： A
    解析： 暂无解析

  • 第13题：

    As an extinguishing agent, foam ______.

    A.conducts electricity

    B.should be directed at the base of the fire

    C.is most efffective on buring gases which are flowing

    D.extinguishes by cooling oil fires below ignition temperature


    正确答案：A
    对于灭火剂，泡沫灭火剂导电。

  • 第14题：

    单选题
    Water evaporates or steam condenses at the saturation temperature, which depends upon the pressure, the higher the pressure （） the saturation temperature.
    A

    the more

    B

    the higher

    C

    the lower

    D

    the highest


    正确答案： B
    解析： 暂无解析

  • 第15题：

    单选题
    A smoking burner with a pulsating flame in auxiliary boiler, is an indication that the（）
    A

    fuel oil supply temperature is normal

    B

    burner electrode is incorrectly positioned

    C

    fuel／air ratio is incorrect

    D

    ignition current is too low


    正确答案： B
    解析： 暂无解析

  • 第16题：

    单选题
    The temperature at which water vapor in the atmosphere begins to condense is called the （）.
    A

    dew point temperature

    B

    condensation temperature

    C

    psychometric temperature

    D

    absolute humidity temperature


    正确答案： B
    解析： 暂无解析

  • 第17题：

    单选题
    As an extinguishing agent，foam（）.
    A

    conducts electricity

    B

    should be directed at the base of the fire

    C

    is most effective on burning gases which are flowing

    D

    extinguishes by cooling oil fires below ignition temperature


    正确答案： C
    解析： 暂无解析

  • 第18题：

    单选题
    The lowest temperature required to cause self-sustained combustion of a substance independent of any outside source of ignition is called （）.
    A

    explosive range

    B

    flash point

    C

    ignition temperature

    D

    combustion temperature


    正确答案： B
    解析： 暂无解析

  • 第19题：

    单选题
    Which of the following statements is correct concerning the “flash point ” of a liquid?（）
    A

    It is lower than the ignition temperature

    B

    It is the temperature at which a substance will spontaneously ignite

    C

    It is the temperature at which a substance, when ignited, will continue to bum

    D

    It is the temperature at which the released vapors will fall within the explosive range


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    One result of operating a diesel engine at light load with excessively low cooling water temperature is a/an （）
    A

    decrease in ignition lag

    B

    increase in fuel economy

    C

    reduction in lube oil viscosity

    D

    increase in cylinder misfiring


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    A high temperature alarm or （） which will melt is used to guard against the explosion of compressor air pipelines.
    A

    a flame trap

    B

    a relief valve

    C

    a fusible plug

    D

    a bursting cap


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    Which of the following statements is correct concerning the viscosity of lubricating oil?（）
    A

    Viscosity will increase as temperature increases

    B

    Viscosity is a measure of a fluid s internal resistance to flow

    C

    Viscosity will decrease as temperature decreases

    D

    Viscosity is not dependent on temperature


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    100℃ is the temperature ______ which water will boil.
    A

    for

    B

    at

    C

    on

    D

    of


    正确答案： B
    解析：
    句意：100度是水沸腾的温度。此处是介词前置的定语从句。temperature是先行词，根据介词短语at the temperature可知用at which，which指代temperature。

相关内容