单选题It is required that such insulator (绝热体)．______a heat resistant material.A must be made ofB should be made ofC will be made ofD would be made of

题目
单选题
It is required that such insulator (绝热体)．______a heat resistant material.
A

must be made of

B

should be made of

C

will be made of

D

would be made of

相似考题

1.\[A\] resist\[B\] perform\[C\] insist\[D\] restrain

2.Which of the following materials is a good insulator?( )A.SteelB.AluminumC.GlassD.Copper

3.The heat gained per pound of refrigerant in the evaporator is known as the ______.A.latent heat of vaporizationB.sensible heatC.refrigerating effectD.specific heat of vaporization

4.For what purpose are the diving pipes used?A. To absorb heat from the sun.B. To store heat for future use.C. To turn solar energy into heat energy.D. To carry heat down below the surface.

更多“It is required that such insulator (绝热体)．______a heat resist”相关问题

  • 第1题：

    On a ship，a door that is required to be marked KEEP CLOSED is designed to ______．

    A.prevent the passage of flammable gases

    B.prevent the passage of poisonous vapors

    C.delay the spread of heat and flames

    D.maintain watertight integrity


    正确答案：D

  • 第2题：

    皮下脂肪防止体温向外放散和防止外界辐射热的侵入，是一种（）。

    • A、导热体
    • B、半导热体
    • C、非导热体
    • D、组合导热体

    正确答案:C

  • 第3题：

    insulator隔离子


    正确答案:隔离子处于抑制状态与活化状态的染色质结构域之间、能防止不同状态的染色质结构域的结构特征向两侧扩散的染色质DNA序列，称为隔离子。

  • 第4题：

    单选题
    The heat removed from the refrigerant in the condenser of a refrigeration plant is the （）
    A

    latent heat of expansion

    B

    sensible heat of condensation

    C

    heat of compression

    D

    all of the above


    正确答案： C
    解析： 暂无解析

  • 第5题：

    单选题
    Why did the electric fence fail? It is because of _____.
    A

    The deer are smart

    B

    The winter is cold

    C

    The fence is of low quality

    D

    Snowpack serves as an insulator


    正确答案： A
    解析：
    文章第三段第三句话写到“…was that the insulating snowpack would prevent an animal from completing the circuit with the ground.”由此可见，由于积雪场绝缘，这样可以防止动物接触到地上的电路，D正确。

  • 第6题：

    单选题
    The rate of heat transfer from a hot region to a cold region is affected most by the （）.
    A

    size of the heat sink

    B

    temperature difference between the regions

    C

    size of the heat source

    D

    total heat of the system


    正确答案： A
    解析： 暂无解析

  • 第7题：

    单选题
    In order to prevent galvanic corrosion，an aluminum boat must be insulated from the davits and gripes. Which of the following is acceptable as an insulator?（）
    A

    Hard rubber

    B

    Canvas

    C

    Leather

    D

    Sponge rubber


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    What is required in addition to the heat，fuel，and oxygen of the fire triangle to have a fire?（）
    A

    Electricity

    B

    Chain reaction

    C

    Pressure

    D

    Smoke


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    The holding power of an anchor is the（）.
    A

    maximum sustained vertical load an anchor will resist before dragging

    B

    maximum sustained horizontal load an anchor will resist before dragging

    C

    maximum sustained vertical load an anchor will resist before the mooring line breaks

    D

    maximum sustained horizontal load an anchor will resist before the mooring line breaks


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    The heat required to change a substance from a liquid to a gas without experiencing a temperature change is defined as the latent heat of （）.
    A

    fusion

    B

    vaporization

    C

    sublimation

    D

    condensation


    正确答案： B
    解析： 暂无解析

  • 第11题：

    名词解释题
    Insulator绝缘子

    正确答案： 一种能够阻止其临近增强子或沉默子对其界定的基因启动子发挥调控作用的调控序列。
    解析： 暂无解析

  • 第12题：

    单选题
    On a ship，a door that is required to be marked KEEP CLOSED is designed to（）.
    A

    prevent the passage of flammable gases

    B

    prevent the passage of poisonous vapors

    C

    delay the spread of heat and flames

    D

    maintain watertight integrity


    正确答案： A
    解析： 暂无解析

  • 第13题：

    参与传热的流体称为（）。

    • A、热载热体
    • B、载热体
    • C、冷载热体
    • D、冷载冷体

    正确答案:B

  • 第14题：

    Insulator


    正确答案: 能阻断激活或失活效应的元件。可在增强子和启动子之间阻断增强子的激活作用，也可防止异染色质的扩增，引起基因表达。

  • 第15题：

    单选题
    The purpose of treating the cooling water of the diesel engine is to（） Ⅰ. resist the scale formation in the cooling chamber Ⅱ.lubricate the engine part Ⅲ.increase thermal capacity Ⅳ.resist corrosion
    A

    Ⅰ+Ⅱ

    B

    Ⅱ+Ⅲ

    C

    Ⅲ+Ⅳ

    D

    Ⅰ+Ⅳ


    正确答案： D
    解析： 暂无解析

  • 第16题：

    单选题
    Which of the following materials is a good insulator?（）
    A

    steel

    B

    aluminum

    C

    glass

    D

    copper


    正确答案： A
    解析： 暂无解析

  • 第17题：

    单选题
    What is an advantage of using foam in fire fighting?（）
    A

    It is effective in controlling fire in flowing oil such as coming from a broken fuel line

    B

    It absorbs heat from materials that could cause reignition

    C

    Most foams can be used jointly with dry chemical extinguishing agents to attack a fire by two methods of extinguishment

    D

    Once the surface is blanketed with foam and the fire is extinguished，no further foam is required


    正确答案： B
    解析： 暂无解析

  • 第18题：

    单选题
    The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
    A

    remain constant along the tubes length

    B

    be greatest in a single pass counter flow heat exchanger

    C

    remain constant throughout the heat exchanger

    D

    vary from section to section through out the heat exchanger


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    Which of the following is true of the heating system of the Johnstown campus?
    A

    The heat is supplied by human bodies only.

    B

    The heat is supplied by both human bodies and other heat-emitting objects.

    C

    The heat is supplied by both human bodies and conventional fuel.

    D

    The heat is supplied by human bodies, other heat-emitting objects, and conventional fuel.


    正确答案： A
    解析：

  • 第20题：

    单选题
    The heat used to change a liquid to a vapor is called （）.
    A

    latent heat of fusion

    B

    latent heat of vaporization

    C

    specific heat of vaporization

    D

    latent heat of the gas


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    The amount of heat released by steam when it changes to water at the same temperature is called（）.
    A

    latent heat of condensation

    B

    latent heat of vaporization

    C

    latent heat of saturation

    D

    sensible heat of condensation


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    Sacrificial zinc anodes are used on the saltwater side of diesel engine heat exchangers to（）.
    A

    reduce electrolytic action on heat exchanger metals

    B

    keep heat transfer surfaces shiny and clean

    C

    prevent rapid accumulation of marine growth

    D

    provide a protective coating on heat exchanger surfaces


    正确答案： A
    解析： 暂无解析

  • 第23题：

    名词解释题
    insulator隔离子

    正确答案： 隔离子处于抑制状态与活化状态的染色质结构域之间、能防止不同状态的染色质结构域的结构特征向两侧扩散的染色质DNA序列，称为隔离子。
    解析： 暂无解析

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