名校
1 . 如图,在四棱锥
中,底面ABCD为矩形,
平面ABCD,M为PC中点.
平面MBD;
(2)若
,求直线BM与平面AMD所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c2b786c64e6a9ed2ec5670cde74f86.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/337f017d0c8eeb3f181e0211935ecf2d.png)
您最近一年使用:0次
2023-04-14更新
|
1784次组卷
|
8卷引用:广西柳州地区民族高级中学2022-2023学年高二下学期期中考试数学试题
名校
2 . 如图,在三棱锥
中,侧棱
底面
,且
,过棱
的中点
,作
交
于点
,连接
.
(1)证明:
平面
;
(2)若
,三棱锥
的体积是
,求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1f1f69539b564b942e1133888643e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4a6a1e70241d600bc6c104313eac61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26260c10afb34f543d86b67898134f3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/21/779893ef-997d-4ba3-95f8-0aea9823120b.png?resizew=131)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b115316e0fcd2ef46a4dd383472996e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0467b0675c3ecfb282cc88255284d3e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
您最近一年使用:0次
2023-08-20更新
|
1288次组卷
|
5卷引用:广西壮族自治区南宁市东盟中学2023-2024学年高二上学期开学考试数学试题
广西壮族自治区南宁市东盟中学2023-2024学年高二上学期开学考试数学试题湖南省长沙市第一中学2023-2024学年高三上学期月考(一)数学试题(已下线)第02讲 空间向量的应用(2)(已下线)专题05 直线与平面的夹角4种常见考法归类-【考点通关】2023-2024学年高二数学高频考点与解题策略(人教B版2019选择性必修第一册)(已下线)第四章 立体几何解题通法 专题三 参数法 微点1 参数法(一)【培优版】
名校
3 . 如图,在正三棱柱
中,D为AB的中点,
,
.
(1)若
,证明:
平面
;
(2)若直线
与平面
所成角为
,求
的值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a9ad711b25c36dae0c2a2cedff9954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebdee217df59190c97fc50c42a53e5fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6892ee09f8368c35bd02ee51e3817d7a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/12/7409afc9-2756-4598-a99f-e25903b7e6fa.png?resizew=146)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914d46f7e72b55d2ff3d9bc38e02b31d.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914d46f7e72b55d2ff3d9bc38e02b31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2023-06-08更新
|
694次组卷
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9卷引用:广西壮族自治区部分学校、部分地区2022-2023学年高二下学期5月检测数学试题
广西壮族自治区部分学校、部分地区2022-2023学年高二下学期5月检测数学试题河南省洛阳市创新发展联盟2022-2023学年高二下学期5月月考数学试题辽宁省朝阳市凌源市2022-2023学年高二下学期期中数学试题甘肃省白银市靖远县第二中学2022-2023学年高二下学期期末数学试题湖南省岳阳市岳阳县第一中学2022-2023学年高一下学期期末数学试题(已下线)第11讲 用空间向量研究距离、夹角问题11种常见考法归类-【暑假自学课】2023年新高二数学暑假精品课(人教A版2019选择性必修第一册)(已下线)1.4.2 用空间向量研究距离、夹角问题(AB分层训练)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)(已下线)专题1.6 空间角的向量求法大题专项训练(30道)-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)(已下线)模块一 专题2 利用空间向量解决立体几何问题 (讲)2 期末终极研习室(2023-2024学年第一学期)高二人教A版
名校
解题方法
4 . 如图,以矩形
的
边为直径作半圆
,点
为半圆上一点,满足
,
.将半圆沿
折起,使得半圆面和平面
垂直.
(1)求证:平面
平面
.
(2)若
是半圆弧
上的一点(不包含
两个端点),且异面直线
与
所成角的余弦值为
.是否存在一点
,使得二面角
的余弦值为
?若存在,求出线段
的长度,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c242819b6e409e1eab675f8e6fea699e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c29a7e8eea08197bf53164a560bee58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a438393ddfc7da1804baf4932442bb35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ec70bc9d4f8f5df312e2f09ee3bcb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
您最近一年使用:0次
5 . 已知三棱柱
,侧棱
底面
,底面
是等边三角形,
是
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/0f601790-408c-4fc4-977f-60ba15827fef.png?resizew=136)
(1)证明:
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1baa3d0db9ad31d33c2883a6efed1dc7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/0f601790-408c-4fc4-977f-60ba15827fef.png?resizew=136)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c9f30439061e890c429c73190082082.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d698ba6974e7f7a777290b65af0e68db.png)
您最近一年使用:0次
6 . 故宫太和殿是中国形制最高的宫殿,其建筑采用了重檐庑殿顶的屋顶样式,庑殿顶是“四出水”的五脊四坡式,由一条正脊和四条垂脊组成,因此又称五脊殿.由于屋顶有四面斜坡,故又称四阿顶.如图,某几何体ABCDEF有五个面,其形状与四阿顶相类似.已知底面ABCD为矩形,AB=2AD=2EF=8,EF∥底面ABCD,EA=ED=FB=FC,M,N分别为AD,BC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/542d5cab-2159-4797-a534-9571d3f52961.png?resizew=204)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/783995be-5ad8-4737-a047-ad4b15f7fc41.png?resizew=211)
(1)证明:EF∥AB且BC⊥平面EFNM.
(2)若二面角
为
,求CF与平面ABF所成角的正弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/542d5cab-2159-4797-a534-9571d3f52961.png?resizew=204)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/783995be-5ad8-4737-a047-ad4b15f7fc41.png?resizew=211)
(1)证明:EF∥AB且BC⊥平面EFNM.
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213d25b5ade550ec6afd3536e9eb5d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
您最近一年使用:0次
2022-11-26更新
|
1771次组卷
|
8卷引用:广西贵港市百校2023届高三上学期11月联考数学(理)试题
广西贵港市百校2023届高三上学期11月联考数学(理)试题山西省部分学校2023届高三上学期11月联考数学试题吉林省部分学校2022-2023学年高三上学期11月联考数学试题湖南省部分学校2022-2023学年高三上学期12月联考数学试题(已下线)专题4 “素材创新”类型(已下线)专题8-2 立体几何中的角和距离问题(含探索性问题)-1河南省创新发展联盟2023届高三上学期11月阶段检测数学(理)试题(已下线)第六章 突破立体几何创新问题 专题一 交汇中国古代文化 微点3 与中国古代文化遗产有关的立体几何问题(三)【基础版】
名校
7 . 如图,在四棱锥
中,
为棱
上一点,
,四边形
为矩形,且
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/24/7541bda9-7ca6-4eb5-b20c-f27bf284f822.png?resizew=187)
(1)求证:
平面
;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5f18c7adab706a76b9762c768c49fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb98f75eb139970719cab97a1ba7fdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/24/7541bda9-7ca6-4eb5-b20c-f27bf284f822.png?resizew=187)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ed12dbce4429a93b12a2aaad0da5520.png)
您最近一年使用:0次
2023-03-19更新
|
919次组卷
|
6卷引用:炎德英才长郡十八校联盟2023届高三第一次联考数学(理)试题(全国卷)
(已下线)炎德英才长郡十八校联盟2023届高三第一次联考数学(理)试题(全国卷)炎德英才长郡十八校联盟2023届高三下学期第一次联考理科数学试题(全国卷)(已下线)炎德英才长郡十八校联盟2023届高三第一次联考数学(理)试题(全国卷)(已下线)炎德英才长郡十八校联盟2023届高三下学期第一次联考理科数学试题(全国卷)长郡十八校联盟2023届高三第一次联考(全国卷)理科数学试题江西省南昌市南昌县莲塘第一中学等2校2023届高三二模数学(理)试题
名校
8 . 已知矩形
中,
,
,
是
的中点,如图所示,沿
将
翻折至
,使得平面
平面
.
;
(2)若
是否存在
,使得
与平面
所成的角的正弦值是
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80d32bd31d565cd7a5fa4b42dc2e040.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cd7fa8f5e3c3b7ce88608388015848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb91cb9a5a14169845d700fbd95890ac.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1e156c3e4ffa35ed0ac6526c8d8753d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2022-11-24更新
|
2635次组卷
|
7卷引用:广西南宁市第三中学五象校区2024届高三下学期适应性考试数学试题
广西南宁市第三中学五象校区2024届高三下学期适应性考试数学试题广东省韶关市2023届高三上学期综合测试(一)数学试题(已下线)数学(新高考Ⅰ卷A卷)(已下线)专题08 立体几何解答题常考全归类(精讲精练)-1广东省惠州市实验中学2023届高三下学期3月月考数学试题福建省宁德第一中学2022-2023学年高二下学期3月月考数学试题(已下线)单元高难问题01探索性问题(各大名校30题专项训练)-【倍速学习法】2023-2024学年高二数学核心知识点与常见题型通关讲解练(人教A版2019选修第一册)
名校
9 . 如图,在四棱锥
中,平面
平面
,底面
为菱形,
为等边三角形,且
,
,O为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/14/5e444009-a80a-414d-9087-2fdbc946a3d8.png?resizew=169)
(1)若E为线段
上动点,证明:
;
(2)G为线段PD上一点,是否存在实数
,当
使得二面角
的余弦值是
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c231fb9aeaf4b73c2d835bb4c3d42b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/14/5e444009-a80a-414d-9087-2fdbc946a3d8.png?resizew=169)
(1)若E为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d26564a3cd8db7262fc41d069682e0b.png)
(2)G为线段PD上一点,是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9247bc3857c75fad272a68dc521399d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ed8243882811858c49f11aa858ff742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
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10 . 如图,在四棱锥
中,已知底面
是正方形,
底面
,且
,
是棱
上动点.
平面
.
(2)线段
上是否存在点
,使二面角
的余弦值是
?若存在,求
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f09bc4b22a549917d5cd3acccc1e014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5102c216393e133fa25dba98cd78535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c14ff9b66f21c05e52dc3c8908c2df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a56f51a6312441f9f07daf7e62ff41.png)
您最近一年使用:0次
2023-05-12更新
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