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【单选题】
公路运杂费:公路运输的运距在( )km 以内为 1.06%A.
20
B.
30
C.
40
D.
50
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反馈参考答案：
举一反三
【简答题】( )(adj.) you feel slightly angry
【简答题】瑞利散射将光信号向四面八方散射，我们把其中沿光纤原链路返回OTDR的散射光称为（）。
【单选题】What's the main idea of the third paragraph?
A.
Gene technology can help people to give birth to a baby.
B.
Gene technology can be used to clone human babies.
C.
How gene technology can be used to treat hereditary diseases.
D.
Gene technology can solve all the problems of the English imperial family.
【判断题】用非分散红外法测定环境空气和固定污染源排气中的CO时，红外线气体分析器中的测量气室可连续通过被测气体，而参比气室是充以不吸收被测组分的特征红外光的气体。
A.
正确
B.
错误
【简答题】车辆技术改装 ——
【单选题】From the health point of view we are living in a marvelous age. We are immunized from birth against many of the most dangerous diseases. A large number of once fatal illnesses can now be cured by mode...
A.
traffic accidents are mainly caused by motorists
B.
thousands of people the world over are killed each year
C.
the laws of some countries about driving arc too lax
D.
only stricter traffic laws can prevent accidents
【简答题】adj. lacking friendly human feeling or atmosphere; you feel unimportant im_______
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