8的立方根等于( )
A.![]() | B.2 | C.![]() | D.4 |
更新时间:2020-09-22 19:51:41
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【推荐1】下列命题的逆命题是真命题的有( )
①全等三角形的面积相等;②
是3的平方根;③若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e128d1acaeaf0dbdeb2fa3dfd06e7573.png)
①全等三角形的面积相等;②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e128d1acaeaf0dbdeb2fa3dfd06e7573.png)
A.0个 | B.1个 | C.2个 | D.3个 |
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(0.85)
【推荐1】实数0,
,
,π,
中,无理数有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/624c79d0f1167a0bb68f35320f126fbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f9844c14ff7b2ec28db4ade1a7ffc8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐2】在3.141,
,
,
,0,4.21,
,
,0.1010010001......(相邻两个1之间0的个数逐次加1)这些数中,无理数的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f265fcfaec161cf44e475966dfe915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1694c29f8a26ffb2477451ac59bae478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f550b3f2e3571c6fb57cb524ed55f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba2ab2be837a2bd7ffe782141b0bbe4e.png)
A.3个 | B.4个 | C.5个 | D.6个 |
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