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http://picflow.koolearn.com/upload/papers/20140823/20140823141712689281.gif( http://picflow.koolearn.com/upload/papers/20140823/20140823141712830179.gif为虚数单位)的二项展开式中第7项为(         )

发布时间:2021-07-12

A.http://picflow.koolearn.com/upload/papers/20140823/20140823141712845228.gif

B.http://picflow.koolearn.com/upload/papers/20140823/20140823141712861220.gif

C.http://picflow.koolearn.com/upload/papers/20140823/20140823141712923248.gif

D.http://picflow.koolearn.com/upload/papers/20140823/20140823141712939239.gif

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