已知,矩形
中,
,
,
的垂直平分线
分别交
、
于点
、
,垂足为
.
、
.求证四边形
为荾形,并求
的长;
(2)如图2,动点
、
分别从
、
两点同时出发,沿
和
各边匀速运动一周.即点
自
停止,点
自
停止,在运动过程中:
①已知点
的速度为每秒
,点
的速度为每秒
,运动时间为
秒,当
、
、
、
四点为顶点的四边形是平行四边形时,求
的值.
②若点
、
的运动路程分别为
、
(单位:
,
),已知
、
、
、
四点为顶点的四边形是平行四边形,求
与
满足的数量关系式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df3b2901ad26337818f75e81448ebb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432043f79e122f291c47453013042704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9766e5eb6796dafc5ffe212afdfc43c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
(2)如图2,动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4139b091e9dc432b267ff68420c77de4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee53bbeef279c5b54b255424d05706e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda7c1b5488fb0b4254a8df99004bdb4.png)
①已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a9eed64d225267a58cd001db67e2a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
②若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eae9ba258299eb489b490594397e23c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
23-24八年级下·湖南株洲·期中 查看更多[3]
湖南省株洲市天元区白鹤学校2023-2024学年八年级下学期期中数学试题(已下线)期末真题必刷05(压轴大题60题12个考点专练)-2023-2024学年八年级数学下学期期末考点大串讲(人教版)(已下线)清单02 中心对称图形-平行四边形 全章复习(2个考点梳理+10种题型解读)-2023-2024学年八年级数学下学期期末考点大串讲(苏科版)
更新时间:2024-05-13 08:41:01
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】在△ABC中,AB、AC边的垂直平分线分别交BC边于点M、N.
![](https://img.xkw.com/dksih/QBM/2019/11/6/2328061528129536/2328083728613376/STEM/59e8d46792754b07b3716d1a004493d5.png?resizew=393)
(1)如图①,若∠MAN=50°,则∠BAC= °;
(2)如图②,若∠BAC=135°,求证:
.
(3)如图③,∠ABC的平分线BP和AC边的垂直平分线相交于点P,过点P作PH垂直BA的延长线于点H. 若AB=5,CB=12,求AH的长.
![](https://img.xkw.com/dksih/QBM/2019/11/6/2328061528129536/2328083728613376/STEM/59e8d46792754b07b3716d1a004493d5.png?resizew=393)
(1)如图①,若∠MAN=50°,则∠BAC= °;
(2)如图②,若∠BAC=135°,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039c6b874324c49786a9afd4da7eba3f.png)
(3)如图③,∠ABC的平分线BP和AC边的垂直平分线相交于点P,过点P作PH垂直BA的延长线于点H. 若AB=5,CB=12,求AH的长.
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解答题-证明题
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适中
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【推荐2】如图,等腰
中,
,
,
边上的中垂线
分别交
,
于点
、
,
的平分线交
于点
.连接
、
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/7fbb36e2-bd4c-4b90-bff2-a9414a1f86ba.png?resizew=125)
(1)求证:
为等边三角形;
(2)猜想
、
、
三条线段之间的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab926d89b65f26c12e3da73ef1e5cf68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/7fbb36e2-bd4c-4b90-bff2-a9414a1f86ba.png?resizew=125)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6830ebecddbd9759be626289c408e4f3.png)
(2)猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,平行四边形
中,
为
边上的一个动点
不与
、
重合
,过点
作直线
的垂线,垂足为
与
的延长线相交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/23/8be3ad37-415a-4185-8dc8-48040e88cc0c.png?resizew=416)
(1)若
为
中点,求证:
.
(2)若
,当点
在线段
上运动时,
的长度是否改变,若不变,求
;若改变,请说明理由
(3)在(2)的条件下,
为直线
上的一点,设
,若
、
、
、
四点构成平行四边形,请用含x的代数式表示
.
![](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/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b90567e6c2e86b3f71c822ee15187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdd9f345915ae742ed3dcd3f9678264.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/23/8be3ad37-415a-4185-8dc8-48040e88cc0c.png?resizew=416)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb65161f9508867ed7847606781fa7e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de2f62abc8a64552d938c2160b909238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87448e09eaa816e50ae92d111d5ded6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87448e09eaa816e50ae92d111d5ded6.png)
(3)在(2)的条件下,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c29bf5a05dd46f6e03dfd22c32f7ce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1358e073cf900f149bd755b853fd6f7.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在△ABC中,以AB为直径作
交BC于点D,
.
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967044858535936/2971730134335488/STEM/29d55fe6-5d1c-4cff-9ed4-910082567097.png?resizew=125)
(1)求证:AC是
的切线;
(2)点E是AB上一点,若
,
,
的半径是6,求EC的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b1f8c020a6e3991537f7b634df041c0.png)
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967044858535936/2971730134335488/STEM/29d55fe6-5d1c-4cff-9ed4-910082567097.png?resizew=125)
(1)求证:AC是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)点E是AB上一点,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c33a448580d57860a14c9cf3537c29e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50f3aae496bb464e98c2f57d20c93e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐3】如图,在Rt△ABC中,∠ABC=90°,AC=15cm,BC=12cm,点D是线段AC的中点,动点P从A﹣D﹣B﹣C向终点C出发,速度为5cm/s,当点P不与点A、B重合时,作PE⊥AB交线段AB于点E,设点P的运动时间为t(s),△APE的面积为S(cm2).
(1)写出线段AB的长;
(2)当点P在线段BD上时,求PE的长(用含t的式子表示);
(3)当点P沿A﹣D﹣B运动时,用含t的代数式表示S;
(4)点E关于直线AP的对称点为E′,当点E′落在△ABC的内部时,直接写出t的取值范围.
(1)写出线段AB的长;
(2)当点P在线段BD上时,求PE的长(用含t的式子表示);
(3)当点P沿A﹣D﹣B运动时,用含t的代数式表示S;
(4)点E关于直线AP的对称点为E′,当点E′落在△ABC的内部时,直接写出t的取值范围.
![](https://img.xkw.com/dksih/QBM/2020/3/2/2410634088103936/2410934724632576/STEM/a90c751f136648d3910d9e6921716f9e.png?resizew=165)
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解答题-问答题
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适中
(0.65)
名校
【推荐1】如图,平行四边形ABCD的周长是10
+6
,BC的长度是5
,AE⊥BC于E,AE=3,求∠D的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3f8c3ba00c59e0634ed10fa85289de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e051d14fd6a787387995331f5e6d026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3f8c3ba00c59e0634ed10fa85289de.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/10/037592ab-801d-4aee-a38c-089a8f8c846e.png?resizew=295)
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解答题-作图题
|
适中
(0.65)
【推荐2】如图,已知
的三个顶点的坐标分别为
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/39509f16-8f89-452e-bf99-b0f3d281ced1.png?resizew=385)
(1)点
关于
轴对称的点的坐标是________;
(2)将
绕坐标原点
顺时针旋转
,画出图形,直接写出点
的对应点的坐标;
(3)作出以
,
,
为顶点,
为对角线的平行四边形的第四个顶点
,并直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d82ce1b2ab811e07c2a9aee798958ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dde32eac58a246c6813f0802ea91987c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e32e92c2d8b3ef1696837086314c86fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/39509f16-8f89-452e-bf99-b0f3d281ced1.png?resizew=385)
(1)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe639eab78eafd2d40ea70aa5d3f21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(3)作出以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,□ABCD的对角线AC、BD相交于点O,AC平分∠BAD,DP//AC,CP//BD.
![](https://img.xkw.com/dksih/QBM/2020/7/15/2506450863210496/2507211430035456/STEM/b2347b4db9a2407e85027f9baaef0645.png?resizew=190)
(1)求证:四边形ABCD是菱形;
(2)若AC=4,BD=6,求OP的长.
![](https://img.xkw.com/dksih/QBM/2020/7/15/2506450863210496/2507211430035456/STEM/b2347b4db9a2407e85027f9baaef0645.png?resizew=190)
(1)求证:四边形ABCD是菱形;
(2)若AC=4,BD=6,求OP的长.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
解题方法
【推荐2】如图,在菱形ABCD中,∠ADE、∠CDF分别交BC、AB于点E、F,DF交对角线AC于点M,且∠ADE=∠CDF.
![](https://img.xkw.com/dksih/QBM/2020/6/10/2481723482710016/2484716312395776/STEM/40bf3ebb0b41457ea382748f6da41b2e.png?resizew=168)
(1)求证:CE=AF;
(2)连接ME,若
=
,AF=2,求
的长.
![](https://img.xkw.com/dksih/QBM/2020/6/10/2481723482710016/2484716312395776/STEM/40bf3ebb0b41457ea382748f6da41b2e.png?resizew=168)
(1)求证:CE=AF;
(2)连接ME,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5378a3867bf1a7386b1330aa8b36f0a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b0fc5e1be2540f5cfe02424ab25df15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce6c0e9de83f2e64ae33609fc08459d.png)
您最近一年使用:0次