解题方法
1 . 如图,在四棱锥
中,
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e800b64fbd8e88227aa9fae21b17e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
,
为
的中点.
(1)证明:
;
(2)若平面
与平面
夹角的余弦值为
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e800b64fbd8e88227aa9fae21b17e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5301520d835820f4184290d8aaf6b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9feb772f92b878092575f5f90ef98ac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/e2752c58-c5be-4748-838b-d9da7ed4c458.png?resizew=109)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4c75067e4a13eb00f34995663292d4.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c29c3bfdae2d4fbe8a8deaa572a2e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
您最近一年使用:0次
2 . 在四棱锥
中,底面
为直角梯形,
,侧面
底面
,且
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/9dd1c6bb-731a-4a7b-bd7f-f66d0c8fc966.png?resizew=173)
(1)证明:
平面
;
(2)若直线
与平面
所成的角为
,求平面
与平面
的夹角的余弦值.
![](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/68f0e48b7a6bb2836bffb57eaf2ff02d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45cff0c5518491ce9abc22c94a329041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa713e7c111c50a3404e12303fd6e0d2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/9dd1c6bb-731a-4a7b-bd7f-f66d0c8fc966.png?resizew=173)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78172568aac9805d2ea2d5f742bf80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,在四棱锥
中,底面ABCD为矩形,
底面ABCD,
,E为线段PB的中点,F为线段BC上的动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/947fcb70-4e00-4bee-a252-fa7ea1ba0b5c.png?resizew=149)
(1)求证:
;
(2)试求BF的长,使平面AEF与平面PCD夹角的余弦值为
.
![](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/4371cc112dc22ac6676212fa6f206b10.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/947fcb70-4e00-4bee-a252-fa7ea1ba0b5c.png?resizew=149)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4486d52b6e410fd7b60428121d96cef.png)
(2)试求BF的长,使平面AEF与平面PCD夹角的余弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64e76a4c1e5934f51cdca2ffbc8313f.png)
您最近一年使用:0次
4 . 三棱台
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/f38c4d30-e985-4518-b44a-3913408773b0.png?resizew=274)
(1)若
与
交于点
,求证:
平面
;
(2)若平面
平面
与底面
所成角的正切值为
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/986ba572d8373df48c996f8c8611498c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5545dc3211671941048034af38092fa6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/f38c4d30-e985-4518-b44a-3913408773b0.png?resizew=274)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e341123522cf56a25b70cc794abc8d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5352d28609d1b3d09a0a29d023d1bb72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d53d01df4d50daeee72c77a739660c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a28d6477c85c5a4ac410a884e92fbe53.png)
您最近一年使用:0次
11-12高二上·浙江台州·期中
名校
5 . 如图,在梯形
中,
,
,
,四边形
为矩形,平面
平面
,
.
平面
;
(2)设点
在线段
上运动,平面
与平面
的夹角为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c0ee0aca57a218e5612835ab49ee2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbc56d42b003cbcb1fbe5c50e55b26b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c0db1f4f666a9be9ede868065a50997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3362a45b72536c714c5107b0ae94f1c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbc56d42b003cbcb1fbe5c50e55b26b.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf2f0df53aa68c9c334165034788166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2db1674add0f4a1a24f5ed893b1c5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
您最近一年使用:0次
2024-03-03更新
|
261次组卷
|
35卷引用:【全国百强校】福建师范大学附属中学2018-2019学年高二上学期期末考试数学(理)试题
【全国百强校】福建师范大学附属中学2018-2019学年高二上学期期末考试数学(理)试题(已下线)2012届河北省衡水中学高三上学期期末考试理科数学2016届山东省日照市一中高三上学期期末考试理科数学试卷四川省乐山市2017-2018学年高二上学期期末教学质量检测数学理试题辽宁省葫芦岛市兴城市高级中学2022-2023学年高二上学期期末数学试题四川省宜宾市叙州区第二中学校2023-2024学年高二上学期期末模拟考试数学试题(已下线)2011-2012年浙江省台州中学高二第一学期期中考试理科数学(已下线)2012届山东省烟台市高三下学期3月诊断性测试理科数学(已下线)2015届浙江省嘉兴市第一中学高三上学期期中考试理科数学试卷2015届山东省日照市高三12月校际联合检测理科数学试卷2017届湖南长沙长郡中学高三入学考试数学(理)试卷2017届湖北襄阳五中高三上学期开学考数学(理)试卷2017届浙江名校协作体高三上学期联考数学试卷2017届山东寿光现代中学高三实验班10月月考数学(理)试卷江西省南昌市第二中学2016-2017学年高二下学期期中考试数学(理)试题【全国校级联考】江西省南昌市八一中学、桑海中学、麻丘高中等八校2017-2018学年高二下学期期中考试数学(理)试题【全国百强校】黑龙江省哈尔滨市第六中学2018届高三下学期考前押题卷(二)数学(理)试题山西大学附属中学2017-2018学年高二3月月考数学(理)试题【市级联考】江西省宜春市 2019 届高三4月模拟考试数学(理科)试题【全国百强校】湖北省华中师范大学第一附属中学2019届高三月考(六)数学(理科)试题智能测评与辅导[理]-空间几何体的三视图、表面积、体积湖南省永州市道县、东安、江华、蓝山、宁远2019-2020学年高三12月联考数学理试题湖南省五市十校2019-2020学年高三上学期第二次联考数学(理)试题河北省武邑中学2018-2019学年高三下学期期中数学(理)试题湖南师范大学附属中学2018-2019学年高三下学期第六次月考数学(理)试题2020届辽宁省大连市第二十四中学高三4月模拟考试数学(理)试题辽宁省沈阳市东北育才学校2021-2022学年高二上学期第一次月考数学试题黑龙江省哈尔滨市第九中学校2022-2023学年高二10月月考数学试题黑龙江省佳木斯市第十二中学(佳木斯市建三江第一中学)2022-2023学年高二上学期期中数学试题吉林省长春市第二中学2023-2024学年高二上学期第一次学程考试数学试题(已下线)第一章 空间向量与立体几何(压轴必刷30题4种题型专项训练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)(已下线)专题01 空间向量与立体几何(3)辽宁新高考联盟(点石联考)2023-2024学年高二下学期3月联合考试数学试题广西南宁市第二中学2023-2024学年高三下学期5月月考数学试题江苏省南京市第五高级中学2023-2024学年高二下学期5月阶段性质量监测数学试卷
名校
6 . 在长方体
中,底面
为正方形,
,
,
为
中点,
为
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/5bdb7eab-d23b-43fe-a7a9-869863dcb96c.png?resizew=116)
(1)求证:
平面
;
(2)求
与平面
成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/5bdb7eab-d23b-43fe-a7a9-869863dcb96c.png?resizew=116)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0138efef1aa28c5b2b1063426ad87a4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9ba4108a28666cea86a5b12f5e7279.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e0d886ac00c4a5c0fe764d566ec62f.png)
您最近一年使用:0次
名校
7 . 如图,多面体
由两个完全相同的四棱锥底面重合拼接而成,它们的公共底面
为矩形,四边形
为平行四边形,
,
,
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/253a527d-645e-4d26-8f96-a81f854ee399.png?resizew=160)
(1)求证:
平面
;
(2)若该多面体体积为4,求直线
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66727fa0701837385c37508fff1f5c33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02b6d19fedaf8488f9637cd64efbca83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/253a527d-645e-4d26-8f96-a81f854ee399.png?resizew=160)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31c34b18525831f3eda7bb90be0199b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
(2)若该多面体体积为4,求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
您最近一年使用:0次
解题方法
8 . 如图所示,四棱锥
中,底面
为正方形,
平面
,点
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/1a8b5bfb-bced-4557-8e63-ba1f63a42dc3.png?resizew=197)
(1)证明:
;
(2)求平面
与平面PDE所成角
(
为锐角)的余弦值.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f01171ae8ba5588c978b68da33e31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/1a8b5bfb-bced-4557-8e63-ba1f63a42dc3.png?resizew=197)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4486d52b6e410fd7b60428121d96cef.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
9 . 如图,在平行六面体
中,
平面
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/e0bb10cc-07f5-4c60-95df-48e535cec68f.png?resizew=171)
(1)求证:
;
(2)线段
上是否存在点
,使得平面
与平面
的夹角为
?若存在,求
的长;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddbb0422a136f45653c8c369f2d75fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4615b646e7f1d30265d3fdd4f8439fe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f02723217767fbe9da511292d1be7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83472c2139c75eea390cfc0e1104e296.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/e0bb10cc-07f5-4c60-95df-48e535cec68f.png?resizew=171)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbeb1554fc1cec56b983a08e9dc52c85.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65277734669566578cbb7d690bb200fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dc61d5de97b5a40be925b278ae494c.png)
您最近一年使用:0次
10 . 在如图所示的多面体
中,四边形
为菱形,且
为锐角.在梯形
中,
,
,
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/861d031b-959d-4365-90bc-a18cd4852d5f.png?resizew=169)
(1)证明:
平面
;
(2)若
,
,是否存在实数
,使得直线
与平面
所成角的正弦值为
,若存在,则求出
,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c766942d554e7f15ffec6eaacbe0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad6f8846d4294ae3789a6ddd17af5b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e1d5146233a1c02370bea48615429b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c674dc5024374f53920947c4cf4baf11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/861d031b-959d-4365-90bc-a18cd4852d5f.png?resizew=169)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734735213b599a9915e1ed91a5d8ce4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d95c012832942c0cd609d3336e65c5b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0308cc1a7f14de3c75a46adca856ccda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261790c66cc71ee3898afabad0c09f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa42621cd6793e7f3673fdb49bc3123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次