名校
1 . 【模型感知】(1)如图①,在正方形
中,点E是对角线
上一点(不与点A、C重合),连接
,将线段
绕点B逆时针旋转
得到线段
,连接
,求证:
;
【模型发展】(2)如图②,在正方形
中,点E是对角线
的延长线上的一点,连接
,将线段
绕点B逆时针旋转
得到线段
,连接
,线段
与
的数量关系为______,
与
所在直线的位置关系为______(不需证明);
【解决问题】(3)如图③,在正方形
中,点E是对角线
延长线上的一点,连接
,将线段
绕点B逆时针旋转
,得到线段
,连接
,
,若
,则
______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926d2094777538ba6a70ea65d5061ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bf97f9082d7f40bc680cc2c58865309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef117060dfe6887a4373e7ca3ac90bee.png)
【模型发展】(2)如图②,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926d2094777538ba6a70ea65d5061ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bf97f9082d7f40bc680cc2c58865309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bf97f9082d7f40bc680cc2c58865309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bf97f9082d7f40bc680cc2c58865309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
【解决问题】(3)如图③,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926d2094777538ba6a70ea65d5061ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bf97f9082d7f40bc680cc2c58865309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bf97f9082d7f40bc680cc2c58865309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a04f902d067b645443f67aa7793cdbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/106c2dedb413075bc0ae4f656c34446d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/5832c66e-cb4a-4921-a6bc-bf1032fdfe54.jpg?resizew=419)
您最近一年使用:0次
2 . 综合与探究
问题情境:数学课上,老师引导同学们以“正方形中线段的旋转”为主题开展数学活动.已知正方形
中,
,点E是射线
上一点(不与点C重合),连接
,将
绕点E顺时针旋转
得到
,连接
.
特例分析:(1)如图1,当点E与点D重合时,求
的度数;
深入谈及:(2)当点E不与点D重合时,(1)中的结论是否仍然成立?若成立,请在图2与图3中选择一种情况进行证明;若不成立,请说明理由;
问题解决:(3)如图4,当点E在线段
上,且
时,请直接写出线段
的长.
问题情境:数学课上,老师引导同学们以“正方形中线段的旋转”为主题开展数学活动.已知正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
特例分析:(1)如图1,当点E与点D重合时,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7316430d26a6f4bcc0bdadfd1a5330a.png)
深入谈及:(2)当点E不与点D重合时,(1)中的结论是否仍然成立?若成立,请在图2与图3中选择一种情况进行证明;若不成立,请说明理由;
问题解决:(3)如图4,当点E在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfa8a9b14da8a472a8855449f1160b84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/16/d0117d7b-d715-406c-8e7f-de1a4e5ab396.png?resizew=466)
您最近一年使用:0次
2023-11-14更新
|
171次组卷
|
2卷引用:吉林省松原市宁江区吉林油田第十二中学2023-2024学年九年级上学期期末数学试题
解题方法
3 . 如图,在正方形
中,点E在
边上,
,交
于G,交
于点F.若
,则
的面积与四边形
的面积之比是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876bb8ce0ca53475fa091ffd18bdc94a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49afe2a73b616a5c3fd4d1fea5c7d99f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00870385ca7f3214e2971779eb4c7904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84f8085a0d16874abb3f47b4c625dc18.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-11-06更新
|
213次组卷
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8卷引用:吉林省长春市南关区2020-2021学年九年级上学期期中数学试题
吉林省长春市南关区2020-2021学年九年级上学期期中数学试题吉林省长春市德惠市2023-2024学年九年级上学期期中数学试题吉林省长春市宽城区第七十二中学2023-2024学年九年级上学期第二次月考数学试题(大班)(已下线)专题18.35 正方形与三垂直(巩固篇)(专项练习)-2020-2021学年八年级数学下册基础知识专项讲练(人教版)(已下线)专题6.23 正方形与三垂直(巩固篇)(专项练习)-2020-2021学年八年级数学下册基础知识专项讲练(北师大版)(已下线)专题05平行四边形六大模型(知识串讲+热考题型)-2022-2023学年八年级数学下学期期中期末考点大串讲(人教版)安徽省皖北片区2023-2024学年九年级上学期期中数学试题(已下线)专题07 四边形模型(六大题型)-【好题汇编】备战2023-2024学年八年级数学下学期期中真题分类汇编(山东专用)
4 . 如图,E是正方形
内一点,将
绕点B顺时针旋转与
重合,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a71a9d21f77e9535de152bb33f802bb.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4ce3f962c91f0d3c7b998b5fbb37b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783a833992e0862211a15fec2d3e3dda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a71a9d21f77e9535de152bb33f802bb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/10/9ed497ab-445b-4f2c-8c20-bbc32421be48.png?resizew=120)
您最近一年使用:0次
2023-11-02更新
|
49次组卷
|
3卷引用:吉林省白城市通榆县九中育才学校联考2023-2024学年九年级上学期10月期中数学试题
5 . 综合与实践
问题情境:正方形折叠中的数学
数学活动课上,老师让同学们翻折正方形
进行探究活动,同学们经过动手操作探究,发展了空间观念,并积累了数学活动经验.
问题背景:过点A引射线
,交边
于点H(点H与点D不重合).通过翻折,使点B落在射线
上的点G处,折痕
交
于E,延长
交
于F.如图①.
问题探究:
与
的大小关系是_________;
是_________三角形.
(2)如图②,当点H为边
上任意一点时(点H与点C不重合).连接
,猜想
与
的数量关系,并说明理由.
问题延伸:
(3)若过点A引直线
,交直线
于点H (点H与点D不重合).通过翻折,使点B落在直线
上的点G处,折痕所在直线
交直线BC于E,直线
交直线
于F.连接
,当
,
时,
的长为__________.
问题情境:正方形折叠中的数学
数学活动课上,老师让同学们翻折正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
问题背景:过点A引射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
问题探究:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c333f2e1769473c6ada9790f841572.png)
(2)如图②,当点H为边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
问题延伸:
(3)若过点A引直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f218914337edd06e59e75d90b777e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
您最近一年使用:0次
2023-10-31更新
|
94次组卷
|
2卷引用:吉林省松原市乾安县2023-2024学年八年级下学期期中考试数学试题
6 . 如图,四边形
为正方形,点
在边
上,且
,点
在边
上,且
.若
,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c59844ded1cfdeb829efab58a25180.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7521601ac1fbc4a52d4fe44be9c8e88c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93bc4c9dd737193f7acce692b23500d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97bb57534d77c2355aef18c9105c189d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da336bc7d2112ecff7d1e632ea2df748.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-10-29更新
|
346次组卷
|
5卷引用:吉林省长春市二道区长春五十二中赫行实验学校2023-2024学年九年级上学期10月月考数学试题
吉林省长春市二道区长春五十二中赫行实验学校2023-2024学年九年级上学期10月月考数学试题山东省济南市钢城区2023-2024学年九年级上学期期中数学试题山西省晋城市沁水县多校2023-2024学年九年级上学期期末数学试题贵州省贵阳市修文县2022-2023学年九年级上学期期末数学试题(已下线)专题01锐角三角函数 (3个知识点5种题型1个易错点1种中考考法)-【帮课堂】2023-2024学年九年级数学下册同步学与练(北师大版)
7 . 如图,四边形
是正方形,点E为
内一点,将BE绕点B顺时针旋转
得到
,连接
、
、
,
与
交于点G.
(1)求证:
;
(2)若
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/23/49327cee-8d20-4359-ac9c-4ded2ab02b7a.png?resizew=92)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f09fbb7c29a1b729704c475f977ffb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16a8e30f70325b5b14851b9377107ab8.png)
您最近一年使用:0次
2023-10-18更新
|
136次组卷
|
3卷引用:吉林省长春市榆树市八号镇中学等校2023-2024学年九年级上学期10月月考联考数学试题
8 . 如图,四边形
是正方形,
、
分别是
和
的延长线上的点,且
,连结
.
(1)求证:
;
(2)若
,
,那么点
到线段
的距离是________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdd9f345915ae742ed3dcd3f9678264.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971b23e3ee827018557d6c88edd5369a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d1125b47dec1c5e93143ee59ad862a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/16/2c40484d-ecfd-4f6c-9ba9-48cee8cafc5b.png?resizew=137)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f537517f5240b716091c1a325a4caa67.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b939af5ba06e279cce39396aaf0fae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a19338598965bb3856cdd0236bbf694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
您最近一年使用:0次
9 . 如图,
是正方形
对角线
上一点,连接
,
,并延长
交
于点
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6fdecc899f66d582f609fa88de9aa54.png)
________ ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5535285d263a80583fa330ca3d42aaac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6fdecc899f66d582f609fa88de9aa54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
您最近一年使用:0次
2023-10-14更新
|
82次组卷
|
2卷引用:吉林省长春市净月实验中学2022-2023学年八年级下学期期中数学试题
10 . 如图,在正方形
中,E为
上一点,连接
,交对角线
于点F.连接
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb1ba8964edcc9d277c5570bb1eb03da.png)
______ 度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f22d612147f72f1583bcd05fe233e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb1ba8964edcc9d277c5570bb1eb03da.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/3/ca863fd0-419b-47b0-aff8-af53d3f68b0b.png?resizew=135)
您最近一年使用:0次