名校
1 . 在下列命题中,①若
为复数,则
为非负数;②互为共轭的两个复数的差为纯虚数;③若
(
,
),则
(
是虚数单位),一定正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ea3cc01ce7266cdf0fd73fd50d23c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1866297d5ea438206efeb1d59981952.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
A.0 | B.1 | C.2 | D.3 |
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2021-08-21更新
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430次组卷
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4卷引用:宁夏回族自治区银川一中2022届高考三模数学(文)试题