边长为1的正方形的对角线长是( )
A.整数 | B.分数 | C.有理数 | D.不是有理数 |
更新时间:2019-10-22 14:06:00
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【推荐1】实数
,0,
,
,
,
,
(相邻两个4依次多一个0),其中无理数的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8397629ac2094389cd991491413535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdefcc8672cae89e5d6b188288ebf99b.png)
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A.2 | B.3 | C.4 | D.5 |
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【推荐2】下列实数中,属于有理数的是( )
A.![]() | B.![]() | C.π | D.![]() |
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【推荐1】如图,学校有一块长方形花圃,有少数人为了走“捷径”,在花圃内走出一条不文明的“路”,其实他们仅仅少走了( )米,却踩伤了花草.
A.1 | B.1.5 | C.2 | D.3 |
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【推荐2】如图,
是
的直径,
于E,
,
,则
为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/2/11ba8621-ad79-4251-b6b3-be4254d9e20d.png?resizew=122)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36844ba7cd37d4717881f5c077913ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/2/11ba8621-ad79-4251-b6b3-be4254d9e20d.png?resizew=122)
A.17 | B.30 | C.34 | D.36 |
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