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1 . 已知集合
,
,
,
,
,
,若A=B,则a+2b=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcfb86a6ab3f19741286b5afe0c39187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e173229a9d9e2c966e1509fae043f46d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b884417a4410fbdb5afb23cb3bfbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b5ebf70b78bf8d1f489629d8dcbcf8.png)
A.-2 | B.2 | C.1或2 | D.1 |
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2021-09-29更新
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6卷引用:福建省建瓯市芝华中学2023-2024学年高一上学期第一次阶段考试数学试题
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2 . 设集合
,其中
,
且
. 若
,则用列举法表示集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf163b6252bd3234de383a08484cf022.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffcfabd204011274ad9908d528944107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5f3584785cd0e626365a35f397c04f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c412d5329ba909164329663b7eecdfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b8f9f38cb3c21535e79722bc67a77d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
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2020-01-10更新
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3 . 方程
和方程
的所有实数解组成的集合为
,则
中的元素个数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd0b018a937c42db3e5f9226b5f9b12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2ca415ab67c51270589743526fadba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.1 | B.2 | C.3 | D.4 |
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2019-11-04更新
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300次组卷
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3卷引用:福建省将乐县第一中学2023-2024学年高一上学期第一次月考数学试题