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> 计算:                                                    ...

计算:                                                    ...

问题详情:

计算

计算:                                                    ...
                                                                 (    )

       A.2       B.

计算:                                                    ... 第2张
   C.
计算:                                                    ... 第3张
    D.
计算:                                                    ... 第4张

【回答】

解:

计算:                                                    ... 第5张
*:A

知识点:数系的扩充与复数的引入

题型:选择题

标签: 计算
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