名校
解题方法
1 . 如图,在四棱锥
中,底面ABCD为梯形,
平面ABCD,
,
,
,
,E为PC的中点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/4d2b4fe5-ac4b-4493-986c-13fc7e9dc990.png?resizew=177)
(1)证明:
平面PBC.
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95475bfc06e884754eb4a455c3f434e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304e9d63e7fdc531f4f7b805b765a1b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/4d2b4fe5-ac4b-4493-986c-13fc7e9dc990.png?resizew=177)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df6a3413b77478c8d4e1e0389dbf5984.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
2023-02-25更新
|
495次组卷
|
6卷引用:黑龙江省哈尔滨市宾县第二中学2022-2023学年高二下学期第一次月考数学试题
名校
解题方法
2 . 在四棱台
中,底面ABCD是正方形,且侧棱
垂直于底面ABCD,
,O,E分别是AC与
的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/17/2981496029151232/2982133741772800/STEM/dc198b51-e593-40c7-b014-2e7d2e2ddee1.png?resizew=187)
(1)求证:
平面
.
(2)求四面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8490b45704dd0002610e3e6e1de05b78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/2022/5/17/2981496029151232/2982133741772800/STEM/dc198b51-e593-40c7-b014-2e7d2e2ddee1.png?resizew=187)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af142a6050b54e8b5777a085d4597481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b2095691cd6e3e50722061cbc0bb648.png)
(2)求四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e966a9f82e3caec6ee8698b3462fac6.png)
您最近一年使用:0次
2022-05-18更新
|
1734次组卷
|
4卷引用:黑龙江省大庆市东风中学2021-2022学年高一下学期期末数学试题
黑龙江省大庆市东风中学2021-2022学年高一下学期期末数学试题青海省西宁市大通回族土族自治县2022届高三二模数学(文科)试题辽宁省实验中学2022-2023学年高二实验班上学期期初测试数学试题(已下线)8.5.2直线与平面平行(精练)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)
名校
3 . 如图,在四棱锥
中,
平面ABCD,
,且
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967289938640896/2967378578423808/STEM/c8e38983-c307-43b0-8910-bab5d96e8701.png?resizew=244)
(1)求证:
;
(2)在线段PD上是否存在一点M,使二面角
的余弦值为
?若存在,求三棱锥
体积;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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380753ef1a69a3844d62651b9c1421e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967289938640896/2967378578423808/STEM/c8e38983-c307-43b0-8910-bab5d96e8701.png?resizew=244)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafa8c14100a4f847b41b9148954116c.png)
(2)在线段PD上是否存在一点M,使二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/698335f4880c7a298f4898c83b6562bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f1145c162038df3c7184d9201c628e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d90f940f5693b22ddf2e7c761887d8.png)
您最近一年使用:0次
2022-04-27更新
|
2571次组卷
|
6卷引用:黑龙江哈尔滨市第一二二中学-202届高三一模数学试题
黑龙江哈尔滨市第一二二中学-202届高三一模数学试题辽宁省沈阳市2022届高三下学期二模数学试题辽宁省大连市2022届高三第一次模拟考试数学试题(已下线)考点16 空间几何体-1-(核心考点讲与练)-2023年高考数学一轮复习核心考点讲与练(新高考专用)(已下线)广东省江门市棠下中学2022-2023学年高三上学期数学试题变式题17-22广东省江门市棠下中学2023届高三上学期数学期末联考复习试题
名校
解题方法
4 . 在直三棱柱
中,AB=AC,D为BC中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/1cb3d81c-a5ce-48ce-abd7-39d9f4ce85a9.png?resizew=144)
(1)求证:AD⊥平面
;
(2)若
,BC=2,
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/1cb3d81c-a5ce-48ce-abd7-39d9f4ce85a9.png?resizew=144)
(1)求证:AD⊥平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ae8a050d7159d4296c2409e5bc0bf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44dc7e4469c1fc443464c105b20f1224.png)
您最近一年使用:0次
2022-07-23更新
|
785次组卷
|
2卷引用:黑龙江省哈尔滨市第九中学校2021-2022学年高一下学期期末数学试题
5 . 已知四棱锥
中,
,
,
,侧面
底面
,点
为
的中点.
![](https://img.xkw.com/dksih/QBM/2022/4/16/2959671530758144/2961367864090624/STEM/35180a0fc97e4e76b1d3bf9e756c18c9.png?resizew=307)
(1)设点
为
上的动点,求证:四面体
的体积为定值;
(2)求平面
和平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e32d58e3c5899425827fd5b29f564c17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/2022/4/16/2959671530758144/2961367864090624/STEM/35180a0fc97e4e76b1d3bf9e756c18c9.png?resizew=307)
(1)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7bce6eba5d07a34f24c5370c580ac7.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
您最近一年使用:0次
6 . 如图,在四棱锥
中,底面
为矩形,
平面
,
,
,
是
中点,
为
上一点.
![](https://img.xkw.com/dksih/QBM/2022/4/13/2957149594411008/2958545211285504/STEM/6059a68a-4b9f-4439-9899-94ee8a1dfc66.png?resizew=168)
(1)求证:
平面
;
(2)若三棱锥
的体积为
,求
的长.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7831ce178516de8ce45b05dd6401e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2022/4/13/2957149594411008/2958545211285504/STEM/6059a68a-4b9f-4439-9899-94ee8a1dfc66.png?resizew=168)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a22d6b860f06fe23618b0d3de6768fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fd1bc6147d69777b26a35d48522f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d196c5696184b812ed6cf16ca3b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
您最近一年使用:0次
2022-04-15更新
|
1474次组卷
|
5卷引用:黑龙江哈尔滨市第一二二中学2022届高三第三次模拟考试文科数学试题
黑龙江哈尔滨市第一二二中学2022届高三第三次模拟考试文科数学试题宁夏石嘴山市2022届高三适应性测试数学(文)试题(已下线)回归教材重难点03 立体几何-【查漏补缺】2022年高考数学(文)三轮冲刺过关(已下线)专题1 空间几何体的长度运算(基础版)四川省宜宾市叙州区第一中学校2024届高三上学期期末数学(文)试题
名校
7 . 如图,在四棱锥
中,底面
是菱形,
,
,
,
底面
,
,点
在棱
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/5f861a4f-d7cb-4a21-8a71-6b1bc5b4be21.png?resizew=216)
(1)证明:平面
平面
;
(2)求二面角
的余弦值.
(3)求四面体
的体积.
![](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/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23f01af749100e1888bba06268843db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae890f9e8b32aa53a54158f24f4a87bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc72a44dad13532cb9ddcc64bd78105.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/5f861a4f-d7cb-4a21-8a71-6b1bc5b4be21.png?resizew=216)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c222223dae9ef27d4c132534d9848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5102c216393e133fa25dba98cd78535.png)
(3)求四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f178906e90bafd73e0ef9f89814855d5.png)
您最近一年使用:0次
2022-09-29更新
|
4263次组卷
|
3卷引用:黑龙江省大庆市大庆铁人中学2022-2023学年高一下学期期末数学试题
8 . 如图,长方体
的底面是边长为
的正方形,高为
,
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/7/2974402399436800/2981488471146496/STEM/0a98d326-0c7e-4daf-b1a1-8d3304b29ceb.png?resizew=178)
(1)求三棱锥
的体积;
(2)求证:平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b199a99e53d67ff4abf233930961a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2070d3881b08d3e4405a0981d44854.png)
![](https://img.xkw.com/dksih/QBM/2022/5/7/2974402399436800/2981488471146496/STEM/0a98d326-0c7e-4daf-b1a1-8d3304b29ceb.png?resizew=178)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d58bf185026e4f6b568f1d5677074b.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de22059d7d80f24817235269e9bb1ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7f4612c548b1f72a964ddb291cd2e.png)
您最近一年使用:0次
2022-05-17更新
|
1007次组卷
|
6卷引用:黑龙江省牡丹江市第一高级中学2022-2023学年高三上学期期末数学试题
黑龙江省牡丹江市第一高级中学2022-2023学年高三上学期期末数学试题宁夏吴忠市吴忠中学2021-2022学年高一下学期期中考试数学试题重庆市长寿中学2021-2022学年高一下学期第三次月考数学试题(已下线)8.3.1 棱柱、棱锥、棱台的表面积和体积(分层作业)-【上好课】2022-2023学年高一数学同步备课系列(人教A版2019必修第二册)(已下线)8.5.3 平面与平面平行 (精讲)(1)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)(已下线)8.5.3 平面与平面平行 (第1课时) 平面与平面平行的判定(分层作业)-【上好课】
名校
解题方法
9 . 如图,已知四棱锥
的底面是直角梯形,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/4c93e806-6173-4935-a9e6-a011c533fd71.png?resizew=155)
(1)若
为侧棱
的中点,求证:
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd2e101f851bb77cfa793f4038015cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da50c86d62316211af1ac45a68e6aeb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e4c39ba72d14560e283ad7f75353a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1671894eb8dfcd972a191ae7723552bb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/4c93e806-6173-4935-a9e6-a011c533fd71.png?resizew=155)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94270844f197d524bf1da4f1385befd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e77e93fb69b4c0716dde86f52e7406.png)
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2022-07-29更新
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1144次组卷
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3卷引用:黑龙江省哈尔滨市顺迈高级中学2022-2023学年高一下学期期末数学试题
名校
10 . 如图,等腰梯形
中,
,
,现以
为折痕把
折起,使点
到达点
的位置,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/76537170-8a47-4876-8412-4f51684ace9b.png?resizew=341)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
平面
;
(2)若
为
上一点,且三棱锥
的体积是三棱锥
体积的2倍,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/442866160751e8ad0b35f7b4f8fd2f50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/b44f4120c94cb7176dc31fcac387b32e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/76537170-8a47-4876-8412-4f51684ace9b.png?resizew=341)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a40043464067061b41399b4ec0bb29c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9bad875ab4b5b8c707d452db4cabaa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68a7bf0da4f7c6f739d2e2461ad9b7.png)
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2022-12-18更新
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6卷引用:黑龙江哈尔滨工业大学附属中学校 2021-2022学年高二下学期期末理科数学试题
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