名校
解题方法
1 . 已知f(x)=ex+sinx+ax(a∈R).
(Ⅰ)当a=﹣2时,求证:f(x)在(﹣∞,0)上单调递减;
(Ⅱ)若对任意x≥0,f(x)≥1恒成立,求实数a的取值范围;
(Ⅲ)若f(x)有最小值,请直接给出实数a的取值范围.
(Ⅰ)当a=﹣2时,求证:f(x)在(﹣∞,0)上单调递减;
(Ⅱ)若对任意x≥0,f(x)≥1恒成立,求实数a的取值范围;
(Ⅲ)若f(x)有最小值,请直接给出实数a的取值范围.
您最近一年使用:0次
2020-06-22更新
|
636次组卷
|
2卷引用:北京市东城区2020届高三第二学期二模考试数学试题
名校
解题方法
2 . 设数列:A:a1,a2,…,an,B:b1,b2,…,bn.已知ai,bj∈{0,1}(i=1,2,…,n;j=1,2,…,n),定义n×n数表
,其中xij
.
(1)若A:1,1,1,0,B:0,1,0,0,写出X(A,B);
(2)若A,B是不同的数列,求证:n×n数表X(A,B)满足“xij=xji(i=1,2,…,n;j=1,2,…,n;i
j)”的充分必要条件为“ak+bk=1(k=1,2,…,n)”;
(3)若数列A与B中的1共有n个,求证:n×n数表X(A,B)中1的个数不大于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d80a140f78215fd78b28b2f056621b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07de86b00421ff253924b24f15b7047.png)
(1)若A:1,1,1,0,B:0,1,0,0,写出X(A,B);
(2)若A,B是不同的数列,求证:n×n数表X(A,B)满足“xij=xji(i=1,2,…,n;j=1,2,…,n;i
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411837b4b3078d05b43cb0439259a362.png)
(3)若数列A与B中的1共有n个,求证:n×n数表X(A,B)中1的个数不大于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c863b250e389c3992dd27963a0b78900.png)
您最近一年使用:0次
2020-06-22更新
|
625次组卷
|
3卷引用:北京市东城区2020届高三第二学期二模考试数学试题
解题方法
3 . 函数
是定义域为
的奇函数,且它的最小正周期是T,已知
,
.给出下列四个判断:①对于给定的正整数
,存在
,使得
成立;②当a
时,对于给定的正整数
,存在
,使得
成立;③当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab3656f5ef5043a590bc64d79db2f98.png)
时,函数
既有对称轴又有对称中心;④当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab3656f5ef5043a590bc64d79db2f98.png)
时,
的值只有0或
.其中正确判断的有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545382e1eb38beae6e1c3fced3729ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82323a61c538e35f48e0f04212ef9128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/295e1e29fc5dbc100c61b199cefdc82b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfbc11712f68eaf8c6024bf5bf164fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d5919fc9758821ae616d3d88f172a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86bb7a7652298597b392ed0644b8b892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab3656f5ef5043a590bc64d79db2f98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00895a9bbbedce5f8a705d2dd5efbd2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aae37cac299cbe3ccac181b2175287f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab3656f5ef5043a590bc64d79db2f98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00895a9bbbedce5f8a705d2dd5efbd2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aae37cac299cbe3ccac181b2175287f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecb7de5df21b8271f5a57ae223971175.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
名校
解题方法
4 . 已知函数
.
(1)设
是
的极值点,求
,并求
的单调区间;
(2)当
时,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213b103f29f42b833c66bcab5488e135.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a646ca216ddaca0dcb69e55f6af6cb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd5e026a565c24617edc36f82fd85e63.png)
您最近一年使用:0次
2020-06-20更新
|
715次组卷
|
3卷引用:贵州省贵阳市2020届高三6月适应性考试(二)数学理科试题
贵州省贵阳市2020届高三6月适应性考试(二)数学理科试题福建省厦门外国语学校2020届高三下学期高考最后一次模拟数学(文)试题(已下线)卷15-【赢在高考·黄金20卷】备战2021高考数学全真模拟卷(北京专用)
5 . 如图,已知椭圆
过点
,离心率为
,
分别是椭圆
的左、右顶点,过右焦点
且斜率为
的直线
与椭圆
相交于
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/276fe1b7-50da-44b3-ae0f-e909e9fa1475.png?resizew=172)
(1)求椭圆
的标准方程;
(2)记
、
的面积分别为
、
,若
,求
的值;
(3)记直线
、
的斜率分别为
、
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2de52259b426acb42761fec59a7748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6bdac20e214b2cb3bd07f8d4778dcca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/276fe1b7-50da-44b3-ae0f-e909e9fa1475.png?resizew=172)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bef6516358878a47560b1d9eff2d5c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c2711907ebea07f0bafae5137dd0c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67bac29f3e7d49cc1ea1e5ae7384ee9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)记直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a3f348a942d468f0d77c0dfbb41d87.png)
您最近一年使用:0次
2020-06-19更新
|
519次组卷
|
8卷引用:数学-6月大数据精选模拟卷03(北京卷)(满分冲刺篇)
(已下线)数学-6月大数据精选模拟卷03(北京卷)(满分冲刺篇)江苏省盐城中学2019-2020学年高三下学期阶段检测数学试题江苏省淮安市清浦中学2019-2020学年高三下学期5月阶段性检测数学试题(已下线)数学-6月大数据精选模拟卷04(山东卷)(满分冲刺篇)2020届江苏省盐城中学高三下学期5月高考模拟数学试题江苏省高邮市2019-2020学年高三上学期12月阶段性学情联合调研数学试题重庆市蜀都中学2020-2021学年高二上学期12月月考数学试题江苏省镇江市扬中市第二高级中学2021-2022学年高二下学期期初数学试题
名校
6 . 已知函数
.
(1)当
时,求
在
处的切线方程;
(2)当
时,讨论
的单调性;
(3)若
有两个极值点
、
,且不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a8e833a06ceeb62656592ab4b04146.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a93969738a9bb969f40cf587f1d5d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ccc0054edc9f8ba83d26f807f7dab41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2020-06-19更新
|
519次组卷
|
8卷引用:数学-6月大数据精选模拟卷03(北京卷)(满分冲刺篇)
(已下线)数学-6月大数据精选模拟卷03(北京卷)(满分冲刺篇)江苏省盐城中学2019-2020学年高三下学期阶段检测数学试题江苏省淮安市清浦中学2019-2020学年高三下学期5月阶段性检测数学试题(已下线)数学-6月大数据精选模拟卷04(山东卷)(满分冲刺篇)2020届江苏省盐城中学高三下学期5月高考模拟数学试题江苏省盐城市滨海县八滩中学2020届高三下学期四模数学试题(已下线)专题19 函数与导数的综合-2020年高考数学母题题源解密(江苏专版)江苏省高邮市2019-2020学年高三上学期12月阶段性学情联合调研数学试题
名校
解题方法
7 . 设
,
,
,则
的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0b15afeffbde2f150e58f581e0b78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b90b550e20a6010bed7a516697abe8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ef6da5f5a087a4cf7f4ce7728f32f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-06-19更新
|
2717次组卷
|
9卷引用:数学-6月大数据精选模拟卷03(北京卷)(满分冲刺篇)
(已下线)数学-6月大数据精选模拟卷03(北京卷)(满分冲刺篇)福建省龙岩市2019-2020学年高三5月教学质量检查数学(文科)试题(已下线)数学-6月大数据精选模拟卷04(山东卷)(满分冲刺篇)江苏省南京市第二十九中学2021-2022学年高三上学期10月月考数学试题(已下线)专题07 指对幂比较大小必刷100题-【千题百练】2022年新高考数学高频考点+题型专项千题百练(新高考适用)(已下线)第19讲 章末检测三-备战2023年高考数学一轮复习考点帮(新高考专用)(已下线)专题3-5 压轴小题导数技巧:比大小 - 3(已下线)专题14 指、对、幂形数的大小比较问题(精讲精练)-3(已下线)专题2-2 幂指对三角函数比大小归类-2
名校
解题方法
8 . 已知曲线
上的点到
的距离比它到直线
的距离少3.
(1)求曲线
的方程;
(2)过点
且斜率为
的直线
交曲线
于
,
两点,交圆
于
,
两点,
,
在
轴上方,过点
,
分别作曲线
的切线
,
,
,求
与
的面积的积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f44ec336446c352fccd7fac1271f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261e2ccfee2e4df6e1f2021de5da27e.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34517f479fb08f6096d2fb0362f3ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/b1b2ffdcc66148aedaa575dde03d144e.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b1c5943782821b84f0221788544734.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d103edb9858de46f254aae980be1978f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c8ff0738060ff7c31db48f67bcb0b7.png)
您最近一年使用:0次
2020-06-19更新
|
517次组卷
|
4卷引用:2020届广东省珠海市高三三模数学(理)试题
2020届广东省珠海市高三三模数学(理)试题四川省宜宾市第四中学2020-2021学年高三上学期第一次月考数学(理)试题(已下线)卷17-【赢在高考·黄金20卷】备战2021高考数学全真模拟卷(北京专用)广东省潮州市湘桥区南春中学2021-2022学年高二下学期期中数学试题
名校
9 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a11371f0caf1e79c79af05ff7b29e6b.png)
(1)求曲线
在点
处的切线方程;
(2)若函数
有两个极值点
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
,且不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a11371f0caf1e79c79af05ff7b29e6b.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb07b01af6a7364cd6aa8114d8c91a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
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名校
10 . 在平面直角坐标系中,
为坐标原点.对任意的点
,定义
.任取点
,
,记
,
,若此时
成立,则称点
,
相关.
(1)分别判断下面各组中两点是否相关,并说明理由;
①
,
;②
,
.
(2)给定
,
,点集
.
(
)求集合
中与点
相关的点的个数;
(
)若
,且对于任意的
,
,点
,
相关,求
中元素个数的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26b5a1b40e3d8bf7958a3953728a6736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333ad25971f3ca6ce7856b61d835c2bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/493b606e0c646850a043f6c2a07c7164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df2cce14d513cdbea09959518c963506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee340ba2cddd5c2fe52479c23f38551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e721f96af232871062fcdb11d33292fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)分别判断下面各组中两点是否相关,并说明理由;
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4212e0f2da912518e8b02a741cc91ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a475d30f8a83feed0ed3c238bb24580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a381feef25466f73c1a3ef085a74d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23472ed238f36798fd92bdba55b81b3a.png)
(2)给定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b7233381e8819d6f4f6f0e74ce748f.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94e1862efa4931cbf76743033ad6f1e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26e951d6d2369e8da79a793a93a66a4.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3661316205a08b035810dcf603480ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d05f3a6e0d625cf73bb656dd85f666d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faee19cda99ba8b7e05910488f7e7ced.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/cf231f8f86fb922df4ca0c87f044cec3.png)
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2020-06-15更新
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