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解题方法
1 . 某儿童玩具的实物图如图1所示,从中抽象出的几何模型如图2所示,由
,
,
,
四条等长的线段组成,其结构特点是能使它任意抛至水平面后,总有一条线段所在的直线竖直向上,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f32e63192e3b7dced9bf97aba128b6.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f32e63192e3b7dced9bf97aba128b6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/9/4e4ff7f6-9423-4205-bd2b-25c4eebb5bd9.png?resizew=312)
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2023-02-08更新
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1250次组卷
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8卷引用:湖南省湘潭钢铁集团有限公司第一子弟中学2023届高三下学期入学考试数学试题