若
,
,且
,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23fa09f36fec8353a4d5ecfdd7786b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78866ea635f38545bca721b65af19884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4f7bea84b44a1dd19c1d3682688c7b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f2416d1f75a45a314331146550832e.png)
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
更新时间:2023-12-13 20:43:48
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单选题
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较易
(0.85)
【推荐1】在数轴上,点
距原点4个单位长度,点
表示的数是2,则线段
的长是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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A.6 | B.2 | C.4或2 | D.6或2 |
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【推荐2】下列运算错误的是( )
A.(-1)2020=1 | B.![]() | C.![]() | D.![]() |
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【推荐1】已知
,
是2的相反数,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3465a833f5b6b71e7b67a426b9872c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
A.![]() | B.3 | C.![]() | D.![]() ![]() |
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【推荐2】在实数
,
,
,
,
,
,
中,有理数的个数为
,无理数的个数为
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5868db100636f99faad2dc8971f50597.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24291703cdec1e3d85e96779ed3c3647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa89e61cb668687bda59caf6ce89e67.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/103070abee09399f1e9510a75c3ba9e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cedf36d24ea4f9063259ea2018baae38.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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