下列计算正确的是( ).
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-12-11 15:18:50
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【推荐2】下列说法正确的有( )个
(1)9的平方根是
(2)平方根等于它本身的数是0和1
(3)
是4的平方根 (4)
的算术平方根是4
(1)9的平方根是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab76dc75e249530e5ff939dc1135cff.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f3fae1304b36c0aa24d98d4ae0508b.png)
A.1 | B.2 | C.3 | D.4 |
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【推荐1】有下列说法:
是
的平方根;
的平方根是
;
;
的立方根是
;
的平方根是
;
的算术平方根是
.其中正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27cb8f1b9ff8d090c3571a667b93f446.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b7073684723741238b95b3b9d3b5301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aeb0e2ffb2a05d5708bb9574051f58a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39fa8414146b94d4b04cd4ca6f4ef93c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4edd882862ff50f2e0e0c5aaf21a8fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d710f99ae1fafe16afced1ba5138d01c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/042e234d538bc2c789d7c5a314f1ca92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f26a50dda17bc9c9b2ca81d0ce63db1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09df55a1f82240ce339f61a4542692e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20d83c9a198076052de7e4d2fcf9aa8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】下列语句中,真命题是( )
A.![]() ![]() | B.从直线外一点到这条直线的垂线段,叫做这点到这条直线的距离 |
C.若![]() ![]() | D.相等的两个角是对顶角 |
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【推荐2】图中的内容是某同学完成的作业,嘉琪帮他做了批改,嘉琪批改正确的题数是( )
![](https://img.xkw.com/dksih/QBM/2020/3/6/2413539099860992/2413927898529792/STEM/1176a847b4874803aa134a688912c770.png?resizew=282)
![](https://img.xkw.com/dksih/QBM/2020/3/6/2413539099860992/2413927898529792/STEM/1176a847b4874803aa134a688912c770.png?resizew=282)
A.2个 | B.3个 | C.4个 | D.5个 |
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