Which of the following reasons represents why the designed compression ratio of a gasoline engine is lower than that of a diesel engine?A.compression must be low for effective spark ignitionB.compression must be low for required horsepower and torque gene

题目

Which of the following reasons represents why the designed compression ratio of a gasoline engine is lower than that of a diesel engine?

A.compression must be low for effective spark ignition

B.compression must be low for required horsepower and torque generation

C.compression must be low to prevent pre-ignition

D.compression must be low to have effective pre-ignition

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    Passengers should possess boarding pass，valid passport，visa， exit registration card， and immigration certificate ______ by related department.

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    C.identified
    D.designed

    答案：A
    解析：
    本题考查近义词辨析。题目意为“乘客应具备登机牌、有效护照、签证、出境登记卡以及由相关部门出具的移民证书。”题干中，A选项“发行，发布，正式发给”，B选项“制作”，C选项“确定，识别”，D选项“设计”。结合题意，本题强调正式性，故选A。
    　　

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    The team manager charged Michelle Palamides with the task of__________the epartment sd'webpage for the company's new intranet.

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    B. Designing
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    答案：B
    解析：
    空格处为介词0f的宾语的位置，名词A和动名词8可能为正确答案。但是能够以名词短语the department’s webpage为宾语的只有动名词，故选8。

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    B

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