如图,将一根有弹性的皮筋AB自然伸直固定在平面内,然后把皮筋中点C竖立向上拉升5cm到点D,如果皮筋自然长度为24cm,则此时该弹性皮筋被拉长了( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/5/5a728576-60be-4204-9bd3-3e6719976856.png?resizew=234)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/5/5a728576-60be-4204-9bd3-3e6719976856.png?resizew=234)
A.1cm | B.2cm | C.3cm | D.5cm |
更新时间:2022-08-29 09:51:35
|
相似题推荐
单选题
|
较易
(0.85)
【推荐1】如图,在足球场内,A,B,C表示三个足球运动员,为做折返跑游戏,现准备在足球场内放置一个足球,使它到三个运动员的距离相等,则足球应放置在( )
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
【推荐2】如图,在平面直角坐标系中,
绕某点顺时针旋转得到
,点A、B、C的对应点分别为
、
、
,则旋转中心的坐标为( )
![](https://img.xkw.com/dksih/QBM/2021/6/19/2746327813169152/2746352303472640/STEM/97e1b642-e8d4-4e04-82d3-39dfc845e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://img.xkw.com/dksih/QBM/2021/6/19/2746327813169152/2746352303472640/STEM/97e1b642-e8d4-4e04-82d3-39dfc845e01f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐1】如图,过圆外一点P作
的切线
,切点为B,连按
交圆于点A.若
,则该切线长为( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/b6129560-a5b3-4772-9e6c-30c8a62e87d9.png?resizew=155)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd24d59581ff66267e525397b72731a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/b6129560-a5b3-4772-9e6c-30c8a62e87d9.png?resizew=155)
A.4 | B.![]() | C.2 | D.![]() |
您最近一年使用:0次