1 . 已知正整数
,函数
.
(1)若
,
,
,
,
在
上严格增,求实数t的最小值;
(2)若
,
,
,
,
在
处有极值,函数
有3个不同的零点,求实数m的取值范围;
(3)若函数
的导函数
恰有
个零点
(
,2,…,k),满足
,求证:
在
上严格增.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2c91611d2411474b94020434befbde.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa69dde104dcf963e67647e801e0149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3299d1d394efc1381671b1632e6e87e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad6bb11629d27b032bd757c348c95e8c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa69dde104dcf963e67647e801e0149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3096521d50a8baaa018ebc9f25ec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c8d0474f7d81ef8dbefaacfd5afe7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc046a7b475b5130da69bf537226ec8.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2aa89da57b35c4f8d4a0783943415b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ea8f47d8d8d9e1832d52b1c7425450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c45176df950dfe48b8ca7eac08ee349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77f2c29c3fa9a439ec37ff47048aa03f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03eaad42260d22a743005c0cd43cd59.png)
您最近一年使用:0次
名校
解题方法
2 . 已知数列
的通项公式为
,其中常数
.
(1)若
,求
的值;
(2)若
前10项的和为1551,试分析
的单调性;
(3)对于常数t,记集合
,试求当
与t变化时,集合
中元素个数的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b46c01a94b7d89f7b868106026626d09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b8e5990ef4ef314941a3154457a9d4.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef48decc62a3062c1cd0ea4c95c17a28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)对于常数t,记集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84c2a1ba529e3a2c2047cdc6f9494bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/614e153312f97a2e6c30e94abd760bee.png)
您最近一年使用:0次
3 . 设
,
,
.
(1)求函数
,
的单调区间和极值;
(2)若关于
不等式
在区间
上恒成立,求实数
的值;
(3)若存在直线
,其与曲线
和
共有3个不同交点
,
,
,求证:
成等比数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff6838d84b68c6f0d3b93b196d9b08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9f049a5f960728c60a909821b2404b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ea60f5404935d4f5a19c4d24fb78a5.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1128ef28912ba41f037afea504d6bc31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc56394db9509409d18d02126dd9ff95.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a3713bb22838d9432c9e484c537e8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed2f490aac02631c2ed9e6b76354a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若存在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4ff39dd1dfc9caf911ad0d11ba21d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a28b3589f39573e9cc7d6684a033f24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdd5552324550304765749352051d850.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8828dad2747f16ae4efee1ac0344a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328071ace61d03885e3bc122b2713ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe7514cd1a9fe0c8a4f7620853b7602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
您最近一年使用:0次
解题方法
4 . 已知
,函数
.
(1)当
时,求
的值域;
(2)若函数
在区间
上是严格增函数,求a的最大值;
(3)设
.方程
的所有正实数解按从小到大的顺序排列后,是否能构成等差数列?若能,求所有满足条件的u的值;若不能,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf013c5239a0a012a27a5dd9430cbb18.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb788ae88e457017bb81120b6a2e5ee.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b24cc8c682f5fed5bfb1fb470d0d193d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d51992c05a557cf6058664f1f8961e.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13b06c6d877e6586423436e3c012e58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cefb58fea78407ac3d8ce8f1789217.png)
您最近一年使用:0次
解题方法
5 . 已知椭圆
的左、右焦点分别为
,直线l的斜率为k,在y轴上的截距为m.
(1)设
,若
的焦距为2,l过点
,求l的方程;
(2)设
,若
是
上的一点,且
,l与
交于不同的两点A、B,Q为
的上顶点,求
面积的最大值;
(3)设
是l的一个法向量,M是l上一点,对于坐标平面内的定点N,定义
.用a、b、k、m表示
,并利用
与
的大小关系,提出一个关于l与
位置关系的真命题,给出该命题的证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0c118b51ab426bc1c1b56179094f146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c38928a92bc4b44ed3c9b89769f5372.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a7a78a0cb55d2396f7213432a86b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662ad7f6a6c6a3d97ebdc5017b17fe8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b17f20c25bb16153b5f2d25062ed7a7.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b8a88a16125366536cb4ad658e0cf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a1cee4fed65dd5d20c089810266653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0970b6eed4ca40fa4ecfbed448615cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0970b6eed4ca40fa4ecfbed448615cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a881309775c3b6a9f4ed408838666342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
您最近一年使用:0次
2022-11-25更新
|
677次组卷
|
5卷引用:上海市虹口区2023届高三上学期11月适应性测试数学试题
上海市虹口区2023届高三上学期11月适应性测试数学试题上海海洋大学附属大团高级中学2023届高三上学期12月月考数学试题(已下线)高二下期中真题精选(易错46题专练)-【满分全攻略】2022-2023学年高二数学下学期核心考点+重难点讲练与测试(沪教版2020选修一+选修二)(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)(已下线)大招4 圆锥曲线创新问题的速破策略
6 . 已知:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fade53eab1e4ee2ddc13cbed312a0a1f.png)
(1)设
,求数列
的通项公式;
(2)在(1)的条件下,设数列
的通项公式为
,且
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f64696f60c533ad95dc7890eb902741.png)
成等差数列,求m的值;
(3)在(1)的条件下,数列
,其中设
,是否存在
,对于任意
满足
?若存在,求出
;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fade53eab1e4ee2ddc13cbed312a0a1f.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa336f119050cbd6a42092f204b36447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)在(1)的条件下,设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e411143008ab1e453fe53dcc0aadcc85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b715e7842b95f654f16056a7c7f2abe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13423c094861baf4b759b7f3d8c3c226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f64696f60c533ad95dc7890eb902741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4166a931e94d58c69dea259e610275.png)
(3)在(1)的条件下,数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c733ce52923a39ddccda79ad4695e415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a50d93004acaa54e47191cc2d44b60a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/646dae47fe49e60090ccbf2d7180c1b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0bf75f247f1af0a98e6ea44cf834b77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7e9f86738335a22298559db41037a4.png)
您最近一年使用:0次
名校
解题方法
7 . 我校高一同学发现:若
是
内的一点,
、
、
的面积分别为
、
、
,则存在结论
,这位同学利用这个结论开始研究:若
为
内的一点且为内心,
的内角
、
、
的对边分别为
、
、
,且
,若
,则
的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bbf9680f74a9ac5d934304654ce2771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2319b6a5373bc8eb13772b8e6d047779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea3c7cd2f23b4521e64a7e64844ec48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089e8a7f6c535fc3cd270af428d55f65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be054623c7e701a2a7170ac7f57b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.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/cfa16e53d10b8f8a309e288d69b8b550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab5af7a2b5e62ab9f8be26b7ef386f68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
您最近一年使用:0次
2022-06-28更新
|
1403次组卷
|
6卷引用:上海市华东师范大学第一附属中学2021-2022学年高一下学期期末数学试题
上海市华东师范大学第一附属中学2021-2022学年高一下学期期末数学试题(已下线)专题1平面向量线性运算 (提升版)(已下线)微专题06 妙用等和线解决平面向量系数和与差问题-【微专题】2022-2023学年高一数学常考点微专题提分精练(人教A版2019必修第二册)(已下线)第五篇 向量与几何 专题13 奔驰定理 微点1 奔驰定理(一)(已下线)重难点专题01 妙用奔驰定理解决三角形面积比问题-【帮课堂】(苏教版2019必修第二册)(已下线)专题04 三角-《期末真题分类汇编》(上海专用)
名校
解题方法
8 . 在复平面中,已知点
,复数
对应的点分别为
,且满足
,则
的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1bd0545ed329436192b7c6f80d4e3c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/465d1eefa80667ac537de5b68e091508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8cb8a77b8166f4265d44de6529b427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deab1feefb27b65df4cdeea510076e01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15026dc2a612debd9ee3a254cde442d4.png)
您最近一年使用:0次
2022-06-28更新
|
2482次组卷
|
19卷引用:上海市虹口高级中学2021-2022学年高一下学期期末数学试题
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名校
解题方法
9 . 我们用
表示某个关于
的代数式,现在有如下两个关于
的真命题:
①对任意的实数
、
,都有
;
②对任意的实数
、
,都有
成立;
其中
是大于
的常数.设实数
、
、
满足条件
且
.
(1)证明:
;
(2)证明:
;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
①对任意的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb13c8f221c87d9e6eae949405d835d.png)
②对任意的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2f1ca03ade14de6711c85de8fc5df0.png)
其中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f7dcce39f3d4dc6b7faf84dc1d0a1.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/a17884a2d114eee89f3def58398d2e48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ceb39aa5c2421cb43735afeed2f216c.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8c6d2d0d52b0ff7e63d3cfe089786e4.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e1f02fad18a316c0514520db1d774a.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eea2a01f7c009f7bb2e82086a906640.png)
您最近一年使用:0次
名校
10 . 已知
,
,…,
(n为正整数)是直线
上的n个不同的点,设
,当且仅当
时,恒有
(i和j都是不大于n的正整数,且
),
.有下列命题:
①数列
是等差数列;
②
;
③点P在直线l上;
④若
是等差数列,P点坐标为
.
其中正确的命题有___________ .(填写所有正确命题的序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/042f6277c98e108cab95992342e4bfd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09490514476657414d8991d633c9d6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4c5b2ecf3d4a067272790f360b5d05d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b47de6409d3ff5da9560329819eba385.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9080a7449480ea117e133abce07db351.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8db49d097b26af86f50bd45d4601a9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/614dff0cb877d00d301584ccb5dbccda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b71af6590f0f369c164a054a8b63bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7575f3f157337fa0a1eb565ad49a33.png)
①数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1165edc23b5782b5942ef7e79130bb94.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/496df17ad7e5c372200aa5cdcf2e093f.png)
③点P在直线l上;
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5dc4024dd556d444a0668ebcbbe328b.png)
其中正确的命题有
您最近一年使用:0次
2022-01-21更新
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886次组卷
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