名校
1 . 给出下列四个说法,其中正确说法的序号为( )
①平行于同一直线的两平面平行;
②平行于同一平面的两平面平行;
③垂直于同一直线的两平面平行;
④垂直于同一平面的两平面平行
①平行于同一直线的两平面平行;
②平行于同一平面的两平面平行;
③垂直于同一直线的两平面平行;
④垂直于同一平面的两平面平行
A.①② | B.②③ | C.①②③ | D.②③④ |
您最近一年使用:0次
2020-01-14更新
|
512次组卷
|
2卷引用:河南省信阳市2018-2019学年高一上学期期末数学试题
名校
2 . 设
是两条不同的直线,
是三个不同的平面,下列说法中正确的序号为( )
①若
,则
为异面直线 ②若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202af51f5ebe87ec0017f439a6ad7fbf.png)
③若
,则
④若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc52997e8e7d139cb30eea9bdd71b406.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0a5990df94c1e61df16039f30052ee9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d66676a4ba8946c6f8c8ff9e2287aac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202af51f5ebe87ec0017f439a6ad7fbf.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0365f4796822f9772287cbd94f271c12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35a45cfcdfbda18b089ce6698ccdbcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e09eeb563830b4802ae817b4da6b69c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
A.①② | B.②③ | C.③④ | D.②④ |
您最近一年使用:0次
2024-06-13更新
|
1004次组卷
|
8卷引用:四川省眉山市彭山区第一中学2020-2021学年高二10月月考数学(文)试题
解题方法
3 . 已知两条不重合的直线
和
,两个不重合的平面
和
,下列四个说法:
①若
,
,
,则
②若
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80645381feb9746cc149da61d553974a.png)
③若
,
,
,则
④若
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b6e422b2e6f6dada4d8c369559a077.png)
其中所有正确的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a4c549e7ea8776ec821c467bc1a913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d6ca6fed060a95127579051f7a6b79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80645381feb9746cc149da61d553974a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384a65ca1ee3d7d86b988ca34c885e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384a65ca1ee3d7d86b988ca34c885e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a4c549e7ea8776ec821c467bc1a913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d6ca6fed060a95127579051f7a6b79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80645381feb9746cc149da61d553974a.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe920cd78db25f5b4df37d066e57800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53cd751c44ad4d9ebd8e3243e751321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80645381feb9746cc149da61d553974a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384a65ca1ee3d7d86b988ca34c885e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe920cd78db25f5b4df37d066e57800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53cd751c44ad4d9ebd8e3243e751321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b6e422b2e6f6dada4d8c369559a077.png)
其中所有正确的序号为( )
A.②④ | B.③④ | C.④ | D.①③ |
您最近一年使用:0次
2024-03-07更新
|
902次组卷
|
4卷引用:山东省聊城市2024届高三上学期期末教学质量检测数学试题
山东省聊城市2024届高三上学期期末教学质量检测数学试题江苏省徐州市沛县第二中学2024届高三下学期期初测试数学试题(已下线)热点6-1 线线、线面、面面的平行与垂直(6题型+满分技巧+限时检测)2024届广东省新改革高三模拟高考预测卷三(九省联考题型)数学试卷
名校
解题方法
4 . 设
,
,
为不重合的平面,
,
为不重合的直线,则下列说法正确的序号为( )
①
,
,则
;
②
,
,
,则
;
③
,
,
,则
;
④
,
,
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35a45cfcdfbda18b089ce6698ccdbcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b82e5d28e2e5a4790e94db2daa6a07c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202af51f5ebe87ec0017f439a6ad7fbf.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe920cd78db25f5b4df37d066e57800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53cd751c44ad4d9ebd8e3243e751321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b6e422b2e6f6dada4d8c369559a077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3bdd7a1a12d66a8b32e239fd6886a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b6e422b2e6f6dada4d8c369559a077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b610e3c5b3d78a5730e7f3d736ac28.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35a45cfcdfbda18b089ce6698ccdbcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b82e5d28e2e5a4790e94db2daa6a07c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c166c4d75211e5294eb440bf2a6350.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/008241f4c7f47526109c74c92ed21fdb.png)
A.①③ | B.②③ | C.②④ | D.③④ |
您最近一年使用:0次
2022-03-15更新
|
554次组卷
|
11卷引用:浙江省北斗星盟2021届高三下学期5月适应性联考数学试题
浙江省北斗星盟2021届高三下学期5月适应性联考数学试题(已下线)专题9.立体几何与空间向量 -《2022届复习必备-2021届浙江省高考冲刺数学试卷分项解析》(已下线)考点16 空间向量与立体几何-2022年高考数学一轮复习小题多维练(新高考版)江苏省镇江市第一中学2021-2022学年高二上学期期中数学试题(已下线)第15课时 课中 平面与平面垂直的性质(已下线)8.6空间直线、平面的垂直A卷(已下线)2020年高考浙江数学高考真题变式题6-10题(已下线)热点06 空间位置关系的判断与证明-2022年高考数学【热点·重点·难点】专练(全国通用)天津市河西区2021-2022学年高三上学期期末数学试题陕西省西安中学2022-2023学年高二上学期第二次月考理科数学试题4.4.2 平面与平面垂直的性质
2023·全国·模拟预测
5 . 如图,在长方体
,中,点
在平面
内的射影为
,则下列正确结论的序号为( )
①多面体
的外接球的表面积等于三棱锥
的外接球的表面积;
②点
为
的垂心;
③
﹔
④
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/5eefdbb1-b81d-4e81-aff7-808721253116.png?resizew=163)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
①多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccb45fee1f7160ebdafe57dfcb5c4733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9e8d0969ba6da74d8b5b6c1ad993e6.png)
②点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07c967c9b3f669ea78edd838e1d8b59e.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d93933a3d5c93d3ab98923ede672c63c.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3a766babd7c8853cf4b1aacc68a563.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/5eefdbb1-b81d-4e81-aff7-808721253116.png?resizew=163)
A.①②④ | B.①② | C.①③④ | D.②④ |
您最近一年使用:0次
6 . 在三棱锥
中,满足
,
,给出下列结论:
①
; ②若
是锐角,则
;
③若
是钝角,则
是钝角; ④若
且
,则
是锐角.
其中正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35333abd7f02d663d15251bc5cbbf921.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4668ef024c694c0517c46af5e563495.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5695ba6ee3f7466b4b32c2e9340abf1.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a72dfbf0138a611174c36ce077e0c47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/149b1f4a7300425e6682e41d5f095377.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f8fcbe6d923d1f5ba46a695756eb37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a72dfbf0138a611174c36ce077e0c47.png)
其中正确结论的序号为( )
A.①②④ | B.①④ | C.②③ | D.②④ |
您最近一年使用:0次
7 . 如图所示的菱形
中,
对角线
交于点
,将
沿
折到
位置,使平面
平面
.以下命题:
①
;
②平面
平面
;
③平面
平面
;
④三棱锥
体积为
.
其中正确命题序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e4b6f03fa7c782408bb6fabb57c1576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ea25ef38e4afa8f75ffd0842890289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe052786101dfcc941480919eb2cecc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/22/70dc5fdb-9d52-4f09-87d1-32477e72c148.png?resizew=342)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c83a968964b21bd831d75905ca1e487.png)
②平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0cf578c7ba542ff9946ad172f896dfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
③平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53d138354c4e021ac8ae2a2fb176ca14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1530d93834fbafba5f7217778ea90442.png)
④三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb4c6e9a723aa843e6ba62d7c1a3a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
其中正确命题序号为( )
A.①②③ | B.②③ | C.③④ | D.①②④ |
您最近一年使用:0次
2023-05-19更新
|
1253次组卷
|
6卷引用:陕西省咸阳市2023届高考模拟理科数学试题
陕西省咸阳市2023届高考模拟理科数学试题陕西省咸阳市2023届高考模拟文科数学试题山西省太原师范学院附属中学、太原市师苑中学校2022-2023学年高一下学期5月月考数学试题江西省南昌市铁路第一中学2023-2024学年高二上学期10月月考数学试题(已下线)第04讲 直线、平面垂直的判定与性质(五大题型)(讲义)(已下线)第一章 点线面位置关系 专题二 空间垂直关系的判定与证明 微点5 平面与平面垂直的判定与证明【基础版】
8 . 在正方体
中,
为棱
上的动点,
为线段
的中点.给出下列四个
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/13/9e0ce4c1-b69f-46c4-8a51-6d5eb2c46b80.png?resizew=202)
①
;
②直线
与平面
所成角不变;
③点
到直线
的距离不变;
④点
到
四点的距离相等.
其中,所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9601d29de0a884953b039ee72f0158fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/13/9e0ce4c1-b69f-46c4-8a51-6d5eb2c46b80.png?resizew=202)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3681ff426cdbe7184eeb004ff0eaefb.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/557f8ff92d79a9d464ff13de17f3eae7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdcfe69b939fd1c271747fe9d37ccdf9.png)
③点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
④点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef79576da8b2f423533a4bf60714f25f.png)
其中,所有正确结论的序号为( )
A.②③ | B.③④ |
C.①③④ | D.①②④ |
您最近一年使用:0次
2022-05-12更新
|
3217次组卷
|
8卷引用:北京市海淀区2022届高三二模数学试题
北京市海淀区2022届高三二模数学试题辽宁省沈阳市第二中学2021-2022学年高一下学期6月月考数学试题湖北省武汉市第四十九中学2022-2023学年高二上学期开学检测数学试题北京市第一七一中学2022-2023学年高二上学期期中调研数学试题北京市第八十中学2022-2023学年高二上学期适应性考试数学试题北京卷专题19B空间向量与立体几何(选择填空题)(已下线)专题1.10 空间向量的应用-重难点题型检测-2022-2023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)湖南省邵阳市新邵县第三中学2023-2024学年高二上学期期中数学试题
9 . 无论
,
,
同为三条不同的直线还是同为三个不同的平面,给出下列说法:
①若
,
,则
;
②若
,
,则
;
③若
,
,则
;
④若
与
无公共点,
与
无公共点,则
与
无公共点;
⑤若
,
,
两两相交,则交点可以有一个,三个或无数个.
其中说法正确的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77fa66cb84828301a0cac235a43d70a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bb0a8369aa7f9ee31e7dba1af64529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc5ae05de7ab1640bf15de25b8e3503b.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f849e1276336a0acbabff8d0994d49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd9fa99f51ca296c8f0ed6b9780adc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d49bd8dd3f7797fdd4b0bb1104d61aa.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f849e1276336a0acbabff8d0994d49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc5ae05de7ab1640bf15de25b8e3503b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd9fa99f51ca296c8f0ed6b9780adc0.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
⑤若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
其中说法正确的序号为( )
A.①③ | B.①③⑤ | C.①③④⑤ | D.①④⑤ |
您最近一年使用:0次
解题方法
10 . 三棱锥
中,点
是
斜边
上一点.给出下列四个命题:
①若
平面
,则三棱锥
的四个面都是直角三角形;
②若
,
,
,
平面
,则三棱锥
的外接球体积为
;
③若
,
,
,
在平面
上的射影是
内心,则三棱锥
的体积为2;
④若
,
,
,
平面
,则直线
与平面
所成的最大角为
.
其中正确命题的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f7e633fb547fd821e5a3cbf1bd1f48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6deecf9ccb7b7879455050633219e09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f479c521ce8a3e0013347d39a7d16e0.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ecf4712f4ce3a52ccc695c1774cbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f643db1101c352132c1d670e9cb30e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d4aca03910382accfe738520daf689c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21665d21bbfb04410c78345de1fd15ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
其中正确命题的序号为( )
A.①②④ | B.①②③ | C.①③④ | D.②③④ |
您最近一年使用:0次