题目内容

接触线中心锚结线夹的螺栓紧固力矩是多少()。

A. 25N.m
B. 57N.m
C. 44N.m
D. 70N.m

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The underlined word in Paragraph 3 refers to______.

A. chosen from
B. given up
C. made preference between
D. achieved accordance between

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市场营销组合是多层次组合。()

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