点O为
的两对角线的交点,
的外接圆交
于点F,且圆心E在
边上.已知
为⊙
的切线.
![](https://img.xkw.com/dksih/QBM/2021/5/12/2719628093177856/2736362150535168/STEM/2643a40e-3774-48bd-b46b-48121267ac9c.png)
(1)求
的度数.
(2)已知
,求弧
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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://img.xkw.com/dksih/QBM/2021/5/12/2719628093177856/2736362150535168/STEM/2643a40e-3774-48bd-b46b-48121267ac9c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce01742c1d5881b2279d7b39d5a86d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
更新时间:2021-06-05 11:25:57
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】如图,在平面直角坐标系中,已知抛物线
与x轴交于点A、B两点,其中
,与y轴交于点
.
(1)求抛物线解析式;
(2)如图,连接
,过点B作x轴垂线,在该垂线上取点P,使得
与
相似(包括全等),请求出点P坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69af562b03ab0753036e49504453f753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee6f55f5de53781cc0e1c61f9fc5995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c43f704b5d150cb4e29e9796a07d80.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/7/6f2018e1-8206-4486-9e45-e97f2506992d.png?resizew=138)
(1)求抛物线解析式;
(2)如图,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ed1fce01430ae31294c29d626626f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐2】如图,点
在直线
上,过点
作
,且
,点
在射线
上(点
不与点
重合),且满足
,
,
与
交于点
,过点
作
于点
.设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aa618d795ebf3d95fcfea6bf44ce9cc.png)
.
![](https://img.xkw.com/dksih/QBM/2020/4/21/2446230204309504/2446484570652672/STEM/8a998c3b2f784a489ca714f9a506678c.png?resizew=189)
(1)用含
的代数式表示
的长;
(2)①线段
的长是________;
②线段
的长是_________;(用含
的代数式表示)
(3)当
为何值时,
有最小值?并求出这个最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1be642ddd61c3ad26bcbe2dc42e3512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77631288195f15947b64e0dfbf0e962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6aa15f56a2a2424f52feaffd4c16ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1fbbed1dbff0bdf2de260443749e151.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aa618d795ebf3d95fcfea6bf44ce9cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cea72e0c37257bcfd85a59ef8dd0f80.png)
![](https://img.xkw.com/dksih/QBM/2020/4/21/2446230204309504/2446484570652672/STEM/8a998c3b2f784a489ca714f9a506678c.png?resizew=189)
(1)用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
(2)①线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
②线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d2f7515b6c87233611cd741ab417ed1.png)
您最近一年使用:0次
解答题-作图题
|
较难
(0.4)
【推荐1】【教材呈现】如图是华师版九年级上册数学教材第77页的部分内容.
【定理证明】请根据教材内容,结合图1,写出证明过程.
【定理应用】如图2,在矩形
中,
,点O为
的中点,点M为
边上一动点,点N为
的中点,连接
、
、
.
(1)当
时,
与
的数量关系是__________,
的值为__________;
(2)如图3,在平行四边形
中,点E为
边上一点,连接
,点P在
上,
,点G是
的中点,连接
交
于点F,若点F为
的中点,
,连接
.
①求
的度数;
②直接写出
的值.
![]() ![]() ![]() ![]() ![]() ![]() ![]() 对此,我们可以用演绎推理给出证明. |
【定理应用】如图2,在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392b9e1a179a6676362679354a9e7e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/11/46ef81bf-da3d-499a-9904-c3426db0c35f.png?resizew=621)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ce32435647d7324b3c40a3fa758fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98e38cebc8600ba35288258fdfe462a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/244bba070922ceddf4ce3d7ec15c40ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2c2c3b41f66eba37347b8bb26f0386.png)
(2)如图3,在平行四边形
![](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/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc7e41b23315231032d849b857fb904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48154acabd6b265753a4adb012f2ead9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6282292819434a8905a212427613fd85.png)
②直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e0a538a73dd30cfcb47455e37bfb4cc.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】在平面直角坐标系中,点
为坐标原点,直线
交
轴于点
,交
轴于点
,
.
(1)如图1,求k的值:
(2)如图2,点
在
上,点
在
上,连接
、
,且
,过点
作
的垂线,垂足为点
,设点
的横坐标为
,线段
的长为
,求
与
之间的函数关系式;
(3)如图3,在(2)的条件下,将线段
绕点
顺时针旋转
得到线段
,连接
并延长交
轴于
,连接
,点
是
的中点,连接
,当
时,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c47f5c710c40e02812a6adde786aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fbfd5b884611322ec6f49c0be9a5c33.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/15/d423f8c9-4107-432b-b488-c7edbe825624.jpg?resizew=351)
(1)如图1,求k的值:
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4cd68cc82e90a5e2049a7ea3171b84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be13a3473655020df1e8beadfe932758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b61739fd6a1e62c43490fb11db3d065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffff2b4b4417e6109f0975b44dc05bdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)如图3,在(2)的条件下,将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4cd68cc82e90a5e2049a7ea3171b84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0ae50d5993a332b5cddb022eaa6f1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0ae50d5993a332b5cddb022eaa6f1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f64c372f6162c32675bfc005cffa6956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a725dc60a0b4b934e302cc68bde864b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d5147653149280e92de7d5cbf718b5e.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐3】![](https://img.xkw.com/dksih/QBM/2022/3/1/2926952526110720/2963014394322944/STEM/0f5314ee-cc78-4ba1-b24b-ebe708a4418e.png?resizew=574)
(1)问题发现
如图 1,△ABC和△CDE均为等边三角形,直线AD和直线BE交于点F.填空:
①∠AFB的度数是 ;
②线段AD,BE之间的数量关系为 ;
(2)类比探究
如图2,△ABC 和△CDE 均为等腰直角三角形,∠ABC=∠DEC=90°,AB=BC,DE=EC,直线AD和直线BE交于点F,请判断∠AFB的度数及线段AD,BE之间的数量关系,并说明理由.
(3)如图 3,在△ABC中,∠ACB=90°,∠A=30°,AB=5,点D在AB边上,DE⊥AC于点E,AE=3,将△ADE绕着点A在平面内旋转,请直接写出直线DE经过点B时BD的长为_____.
![](https://img.xkw.com/dksih/QBM/2022/3/1/2926952526110720/2963014394322944/STEM/0f5314ee-cc78-4ba1-b24b-ebe708a4418e.png?resizew=574)
(1)问题发现
如图 1,△ABC和△CDE均为等边三角形,直线AD和直线BE交于点F.填空:
①∠AFB的度数是 ;
②线段AD,BE之间的数量关系为 ;
(2)类比探究
如图2,△ABC 和△CDE 均为等腰直角三角形,∠ABC=∠DEC=90°,AB=BC,DE=EC,直线AD和直线BE交于点F,请判断∠AFB的度数及线段AD,BE之间的数量关系,并说明理由.
(3)如图 3,在△ABC中,∠ACB=90°,∠A=30°,AB=5,点D在AB边上,DE⊥AC于点E,AE=3,将△ADE绕着点A在平面内旋转,请直接写出直线DE经过点B时BD的长为_____.
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】如图1,正方形ABCD的边长为4,点E, F分别在BC, BD上,且BE=1,过三点C, E, F作⊙O交CD于点G.
![](https://img.xkw.com/dksih/QBM/2019/12/30/2366368132980736/2367086620475392/STEM/5b867e11231f4d8f8ddb7ed9ba8eadb9.png?resizew=638)
(1)证明∠EFG =90°.
(2)如图2,连结AF,当点F运动至点A,F, G三点共线时,求
的面积.
(3)在点F整个运动过程中,
①当EF, FG, CG中满足某两条线段相等,求所有满足条件的BF的长.
②连接EG,若
时,求⊙O的半径(请直接写出答案) .
![](https://img.xkw.com/dksih/QBM/2019/12/30/2366368132980736/2367086620475392/STEM/5b867e11231f4d8f8ddb7ed9ba8eadb9.png?resizew=638)
(1)证明∠EFG =90°.
(2)如图2,连结AF,当点F运动至点A,F, G三点共线时,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441dec590b47adc3678a291a3ec89a4a.png)
(3)在点F整个运动过程中,
①当EF, FG, CG中满足某两条线段相等,求所有满足条件的BF的长.
②连接EG,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c25f9178d20a57720759657a8d218dfa.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】问题提出:
(1)如图①,利用尺规作劣弧
上距离弦
最远的点
;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/24/80cd66e3-0b08-4ad2-a474-e76ab862378b.png?resizew=107)
问题探究:
(2)如图②,在
中,
,
,
,点
为
内一点,若
的面积为6,连接
,求
的最小值;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/24/c6ca7388-1114-4bff-a13d-aee946128751.png?resizew=120)
问题解决:
(3)如图③,某地有一块四边形的鱼塘
,其中
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6951321485a7ab76664097dc9f41687e.png)
,
,为了方便钓鱼爱好者,以
为边向鱼塘内搭建一个如图所示的三角形钓鱼台
,再过点
向鱼塘边
搭建一个通道
,为了节约成本,要求
,且
最短,试求通道
的最小值(通道的宽度忽略不计).
(1)如图①,利用尺规作劣弧
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/24/80cd66e3-0b08-4ad2-a474-e76ab862378b.png?resizew=107)
问题探究:
(2)如图②,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/24/c6ca7388-1114-4bff-a13d-aee946128751.png?resizew=120)
问题解决:
(3)如图③,某地有一块四边形的鱼塘
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4641bd4d4d8d007f40c98e818decd417.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6951321485a7ab76664097dc9f41687e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7afbf217507a57373610f79a945aad12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560bb736c61cfce16b7426bc853ca205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb5255e2159617505e0c87d01437a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942a9a6bde4a5b9803b68b1e9065de62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/24/5418310e-3552-4c8f-98a8-2399c9d38ac3.png?resizew=124)
您最近一年使用:0次