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1 . 定义集合运算:
,设
,
,则集合
的所有元素之和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260a249ce905d0f200e228b9c9af1748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c9a1e9dd14cbd2271ba2f472664ad57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c64c70b8c51fea3b419c99c1ea2e7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/733b0583afc6529d6812ef745a4dac5e.png)
A.16 | B.18 | C.14 | D.8 |
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2021-04-14更新
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1290次组卷
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6卷引用:黑龙江省大兴安岭地区呼玛县高级中学2022届高三上学期期末数学(理)试题