The effect that exhaust gas recirculation can reduce NOX formation is partly due to a reduction of the()concentration in the combustion zone and partly due to the content of water and carbon dioxide in the exhaust gas.A.OxygenB.NitrogenC.SulphurD.Freon

题目

The effect that exhaust gas recirculation can reduce NOX formation is partly due to a reduction of the()concentration in the combustion zone and partly due to the content of water and carbon dioxide in the exhaust gas.

A.Oxygen

B.Nitrogen

C.Sulphur

D.Freon

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    Due ()the increase in raw material costs, we must unfortunately raise the cost of our merchandise ()you.

    A、for,for

    B、for,at

    C、to,to

    D、to,at


    参考答案：C

  • 第2题：

    Current liabilities are( )

    A. due, but not receivable for more than one year

    B. due, but not payable for more than one year

    C. due and receivable within one year

    D. due and payable within one year


    正确答案：D

  • 第3题：

    The long‐awaited Hubble Space Telescope,due（ ）orbit the Earth next March,will observe some of the oldest stars in the sky.
    to


    答案：
    解析：
    due to“定于，预计”。句意：人们期待已久的哈勃望远镜将在三月进入地球轨道，观测天空中最古老的星球。

  • 第4题：

    Great changes are in prospect in this area ()foreign investment.

    A、due to

    B、because

    C、owing

    D、due


    参考答案：A

  • 第5题：

    In Britain people _____________ four million tons of potatoes every year.

           A) swallow                                                    B) dispose

           C) consume                                                   D) exhaust

     


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    选出读音不同的选项。

    A.new
    B.few
    C.sew
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    答案：C
    解析：

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