The ability of lubricating oils to resist viscosity changes during temperature changes is indicated by the ____.A.American PetroleumB.Institute number viscosity index numberC.Seconds Saybolt Furol numberD.Seconds Saybolt Universal number

题目

The ability of lubricating oils to resist viscosity changes during temperature changes is indicated by the ____.

A.American Petroleum

B.Institute number viscosity index number

C.Seconds Saybolt Furol number

D.Seconds Saybolt Universal number

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更多“The ability of lubricating oils to resist viscosity changes during temperature changes is ”相关问题

  • 第1题：

    The process of choosing names______ widely from culture to culture．

    A．shifts

    B．varies

    C．differs

    D．changes


    正确答案：B
    vary from“变化”；shift from“来回移动”；differ from“与……不同”；change from为“从……变成……”。

  • 第2题：

    The price of vegetables varies according to the weather.

    A:jump
    B:rises
    C:falls
    D:changes

    答案：D
    解析：
    本句话的意思是：“蔬菜价格随天气变化而不同。”vary：变化、使不同。 jump：跳、跃。rise和fall是反义词，分别表示上升和下降，例如：The tides rise and fall with seasons．潮水随着季节不同时涨时落。change：改变、变化，例如：If you want to change your doctor there are two ways of doing it．你要是想换个医生，办法有两个。

  • 第3题：

    The price of food fluctuates according to the weather.

    A:jumps
    B:rises
    C:falls
    D:changes

    答案：D
    解析：
    fluctuate：波动，涨落。题干意思为：食品价格因天气而波动。jump：跳跃，暴涨; rise：上升；fall：降落；change：变化，变动。经过比较，只有change与题干中fluctuate意思相近，应选择D。

  • 第4题：

    In the process,the light energy converts to heat energy.

    A:leaves
    B:drops
    C:reduces
    D:changes

    答案：D
    解析：
    本句意思：在这个过程中，光能会转化成热能。convert“转换，转变”,convert sth.into (to) sth.“把……转化为……”。change“改变”，与convert意思相近。

  • 第5题：

    In the process,the light energy converts to heat energy.

    A:reduces
    B:drops
    C:leaves
    D:changes

    答案：D
    解析：
    这句话的意思是：在这一过程中，光能转变为热能。句中“convert”意为“改变，转换”。 四个选项中A项意为“减少”;B项意为“下降，降落”;C项意为“离开”;D项意为“改变，变化”。 因此只有D项最为合适。

  • 第6题：

    The price of vegetables varies according to the weather.

    A: jumps
    B: rises
    C: falls
    D: changes

    答案：D
    解析：
    句意为：蔬菜的价格随季节变化而变化。vary意为“变化，有所不同”，与change意思相同。因此选D项。

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