名校
解题方法
1 . 阅读材料:
(1)下侧图片中为初中化学实验试题,请用数学中不等式知识解释题中“氯化钠加得越多,溶液越咸”这句话,用
代替溶质,
代替溶液,
代替添加的溶质并证明.
(2)结合(1)中的不等式关系与
,
,则有
的不等式性质.解答问题:已知
,
,
是三角形的三边,求证:
.
(1)下侧图片中为初中化学实验试题,请用数学中不等式知识解释题中“氯化钠加得越多,溶液越咸”这句话,用
![](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/071a7e733d466949ac935b4b8ee8d183.png)
(2)结合(1)中的不等式关系与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf7adcc976209d4b686156120bea276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e7456f61a8aff7614ca77f6210ba54.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/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01721633154e61aa2650bf0b8b10e666.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/30/2a31b301-f31d-43f1-b62d-80bdc37ca773.png?resizew=216)
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名校
2 . 对于平面向量
,定义“
变换”:
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8560ca9023cf64637ce1467f338556bd.png)
(1)若向量
,
,求
;
(2)已知
,
,且
与
不平行,
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d128ae3e21294e2eac5bcc775ccfb03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a18fd5445fb8a04b925a2745a56f613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fddd9dc1110e60973b7b9e43bb1f9d15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8560ca9023cf64637ce1467f338556bd.png)
(1)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea462b0382581d99c8bba51d9b79f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e186ebc624ebacde9a03b96289f1ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e900404ba71110c5861ced9634646f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22601439d36b6a93453d738c2b803eb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc499d2e731df31957eeaa355bfbac4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a63cf7e5f25165ccf0e24d32add179ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a176f300a2462e4f1ffef99d30c21e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e719e667f2783febbec38dea080b98.png)
您最近一年使用:0次
名校
解题方法
3 . 设函数
,
,
.
(1)求函数
在
上的单调区间;
(2)若
,
,使
成立,求实数a的取值范围;
(3)求证:函数
在
上有且只有一个零点
,并求
(
表示不超过x的最大整数,如
,
).
参考数据:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89231f0078f75ad0193f9aec97b9286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9f049a5f960728c60a909821b2404b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa3e40a1b375c50331403283bfd7139b.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0167434c2c1a16e59e89d436ac0a1278.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69fc78bba43797d2f81cb912f2d05c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac0afd127806b03435a649606544fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe53bb5e833f83c2d8290d195fabf02b.png)
(3)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b5e51f08fcfaa95b58f3a14c8250a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41667e2986ec718cabeeb1088794ed67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04309e875209bde5b87438535ea3b1cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/977353e0326dc27334a2940f1149e973.png)
参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dad09268b7cb8bfcbea010cb6d2a29e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e143d31a5ae4d2fb8cba2466bae1fe54.png)
您最近一年使用:0次
2024-01-06更新
|
659次组卷
|
6卷引用:吉林省白山市2023-2024学年高一上学期期末教学质量监测数学试卷
名校
解题方法
4 . 已知函数
为奇函数.
(1)求
的值;
(2)试判断
的单调性,并用定义证明;
(3)设函数
,若
,函数
的两个零点分别为
,函数
的两个零点分别为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d447a5ce1b26ae4e36cdd88d9db882e2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e86bf823b0bcd0a763de86785277448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42b921b842e18d9f76814d993610de90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2b7f67c801f3c2ab410190fd61b073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa38149578f22f9e1e2bd481dade72de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8911c27c899408995a2e9c0aaebaf74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ecf78d9d457781e46137629c613cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0466d19eebba7c8031bbc76772f92bb5.png)
您最近一年使用:0次
2023-12-20更新
|
184次组卷
|
2卷引用:吉林省白山市抚松县第一中学2023-2024学年高一上学期12月月考数学试题
名校
5 . 射影几何学中,中心投影是指光从一点向四周散射而形成的投影,如图,
为透视中心,平面内四个点
经过中心投影之后的投影点分别为
.对于四个有序点
,定义比值
叫做这四个有序点的交比,记作
.
;
(2)已知
,点
为线段
的中点,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42c2d86d8daea5e652d99fe1c6bc3f9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d33747c77ff8ec31b1d8787a2a99748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fc6388f7dd9e393808bfcfb41b499e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d4c674a3fe91bd4bffd3dcd9ea58f1.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29998510e4ecded4acfc9e981da9110f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ead0dc6f5e5881fd26b1a07f37024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32f2d4d1d2c16c54b2caef17840bfcb.png)
您最近一年使用:0次
2023-07-11更新
|
1035次组卷
|
10卷引用:吉林省长春市东北师范大学附属中学2023-2024学年高一下学期5月期中考试数学试题
吉林省长春市东北师范大学附属中学2023-2024学年高一下学期5月期中考试数学试题山东省济南市2022-2023学年高一下学期期末数学试题(已下线)模块四 专题5 暑期结束综合检测5(能力卷)(已下线)第11章 解三角形 单元综合检测(难点)--《重难点题型·高分突破》(苏教版2019必修第二册)(已下线)上海市高一下学期期末真题必刷04-期末考点大串讲(沪教版2020必修二)(已下线)专题01 平面向量及其应用(2)-期末真题分类汇编(新高考专用)【人教A版(2019)】专题09解三角形(第三部分)-高一下学期名校期末好题汇编(已下线)重组2 高一期末真题重组卷(山东卷)B提升卷黑龙江省鹤岗市工农区鹤岗市第一中学2023-2024学年高三上学期开学数学试题(已下线)专题22 新高考新题型第19题新定义压轴解答题归纳(9大题型)(练习)
名校
6 . 在
中,点
,
分别在边
和边
上,且
,
,
交
于点
,设
,
.
,试用
,
和实数
表示
;
(2)试用
,
表示
;
(3)在边
上有点
,使得
,求证:
,
,
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59802bde1dc59ba9000157b08463b2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11fbc3a1f1e848cf1349b9327be8607d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c20cbdfe479954ba2bc33142bc931c33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066bca5c293e81c8579c85cb365c4a34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea5d9e54e2909dff93a6b5b2dea99215.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/471ac0f42d01c6d6e094b63628586e4d.png)
(2)试用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/471ac0f42d01c6d6e094b63628586e4d.png)
(3)在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9fbb04478f55e63cf9f3a104658bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
您最近一年使用:0次
2023-03-01更新
|
3133次组卷
|
13卷引用:吉林省长春市长春吉大附中实验学校2022-2023学年高一下学期4月月考数学试题
吉林省长春市长春吉大附中实验学校2022-2023学年高一下学期4月月考数学试题辽宁省锦州市2022-2023学年高一上学期期末考试数学试题山东省日照第一中学2022-2023学年高一下学期3月质量检测数学试题山东省乳山市银滩高级中学2022-2023学年高一下学期3月月考数学试题甘肃省张掖市某重点校2022-2023学年高一下学期3月月考数学试题(已下线)高一下册数学期中模拟卷(二)(已下线)专题01 平面向量的概念与运算(1)-期中期末考点大串讲河南省新乡市原阳县第三高级中学2022-2023学年高一下学期第一次月考测试数学试题湖南省岳阳市岳州中学2022-2023学年高一下学期3月月考数学试题陕西省西安市西安交大附中2023-2024学年高一下学期第一次月考数学试题山东省威海市乳山市银滩高级中学2023-2024学年高一下学期3月月考数学试题辽宁省朝阳市建平县实验中学2023-2024学年高一下学期5月期中考试数学试题陕西省西安市西安交大附中2023-2024学年高二下学期第一次月考数学试题
名校
解题方法
7 . 平行四边形ABCD中,
,
,如图甲所示,作
于点E,将
沿着DE翻折,使点A与点P重合,如图乙所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/22/ff6f32a8-1ad4-4851-b013-3200acd67296.png?resizew=371)
(1)设平面PEB与平面PDC的交线为l,判断l与CD的位置关系,并证明;
(2)当四棱锥
的体积最大时,求二面角
的正切值;
(3)在(2)的条件下,G、H分别为棱DE,CD上的点,求空间四边形PGHB周长的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80f51c31583fea58fde645474d60b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5595129319f9f5f069297ddb1455f97a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/22/ff6f32a8-1ad4-4851-b013-3200acd67296.png?resizew=371)
(1)设平面PEB与平面PDC的交线为l,判断l与CD的位置关系,并证明;
(2)当四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e98920101c174b991d7a8481707ab88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715cc9ea5e7d80930284ffb117142770.png)
(3)在(2)的条件下,G、H分别为棱DE,CD上的点,求空间四边形PGHB周长的最小值.
您最近一年使用:0次
2022-06-20更新
|
1454次组卷
|
5卷引用:吉林省实验中学2021-2022学年高一下学期6月教学诊断检测(三)数学试题
名校
解题方法
8 . 如图,圆柱
的轴截面ABCD为正方形,
,EF是圆柱上异于AD,BC的母线,P,Q分别为线段BF,ED上的点.
![](https://img.xkw.com/dksih/QBM/2022/4/23/2964375380615168/2965847181041664/STEM/3e77eb85-a8cb-4d19-a8b9-ba53f2b5fdb7.png?resizew=186)
(1)若P,Q分别为BF,ED的中点,证明:
平面CDF;
(2)若
,求图中所示多面体FDQPC的体积V的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192f4f9446c954a291f779d963f90257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://img.xkw.com/dksih/QBM/2022/4/23/2964375380615168/2965847181041664/STEM/3e77eb85-a8cb-4d19-a8b9-ba53f2b5fdb7.png?resizew=186)
(1)若P,Q分别为BF,ED的中点,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72221ee5b504d596ff799c0b356aa0ea.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4996f88b6be9b1df67f43771eda6d36f.png)
您最近一年使用:0次
2022-04-25更新
|
1616次组卷
|
5卷引用:吉林省延边朝鲜族自治州延吉市延边第二中学2022-2023学年高一下学期期中数学试题
吉林省延边朝鲜族自治州延吉市延边第二中学2022-2023学年高一下学期期中数学试题重庆市南开中学校2021-2022学年高一下学期期中数学试题(已下线)第02讲 玩转立体几何中的角度、体积、距离问题-2022年暑假高一升高二数学衔接知识自学讲义(人教A版2019)重庆市南岸南坪中学校2022-2023学年高一下学期期中数学试题辽宁省大连市第八中学2021-2022学年高一下学期6月月考数学试题
名校
9 . 在平面直角坐标系中,
为坐标原点,对任意两个向量
,
,作
,
.当
,
不共线时,记以
,
为邻边的平行四边形的面积为
;当
,
共线时,规定
.
(1)分别根据下列已知条件求
:
①
,
;②
,
;
(2)若向量
,求证:
;
(3)若A,B,C是以О为圆心的单位圆上不同的点,记
,
,
.
(i)当
时,求
的最大值;
(ii)写出
的最大值.(只需写出结果)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b8caa5a64a7571cb63762ad5934ad7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4df17d3e2016060cf5501f34fe936ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bc39d830d3d02893dda075ad1824410.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ec3eee501372c893cbda8016d86c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560ee2894ba8c5cee6633430cc8b3b41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f1a8e551cba7ec9f451749f60e628d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9e83b286b9645ecf2b70e4e0483918c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560ee2894ba8c5cee6633430cc8b3b41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f1a8e551cba7ec9f451749f60e628d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e83030d52a41bf48e16376fa09e92c.png)
(1)分别根据下列已知条件求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0546169d6b53b71ff900aa25849828b0.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e7ae6f63b189da70478b63cf3163016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5341ffb79dc6338f4fcbc5c01aa7283b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f60d46d92fd0574785f8bbff0fc9b4c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b164304c5ae5226f51fd8e69874d3f.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b6067a888852729f7a28280c09bfcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac7facde224d8fc0915aa6a1ac5a02e1.png)
(3)若A,B,C是以О为圆心的单位圆上不同的点,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a9cb32a25c2a8bb99f75633b4cd5ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/049131856ba841523793ee3d83099014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eca8aa7145b2327dbccba46da05bb86.png)
(i)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da784cdc9836f464cdf68c0890e5f48d.png)
(ii)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf58ff43d737da82d17bd1d94359e6e.png)
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2022-07-08更新
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