若
,则
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6611f7a260c00cb5843387c4303b0cc4.png)
![](https://img.xkw.com/dksih/QBM/2012/10/26/1571038156791808/1571038162116608/STEM/f61c8a26b0984565a9039fe46eccc2aa.png)
A.![]() | B.1 | C.±1 | D.0 |
12-13高一上·河南周口·阶段练习 查看更多[2]
更新时间:2016-12-02 01:08:14
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【知识点】 根据两个集合相等求参数解读
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单选题
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较易
(0.85)
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【推荐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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【推荐2】集合A可以表示为
,也可以表示为
,则
的值为
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496155541504/1572496161234944/STEM/18a9ccf9f49a46a2a441dc5d0f3f0f17.png)
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496155541504/1572496161234944/STEM/818c871edfe249028ad683a0c1ba21dd.png)
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496155541504/1572496161234944/STEM/1bc941731d114e01ad738401946ce686.png)
A.-1 | B.0 | C.1 | D.-1或1 |
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