1 . 已知矩形
与
,
为
上一点,记二面角
的大小为
.若存在过点
的
条直线
,
,
,
,其与平面
、平面
所成的角均为
,则
的值可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](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/41952e78731dc57a028a93672c9ec29c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f2813ee8f26cca880b6427f5f545d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31a14bd2a972f43d7a26a99589ad083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 某工厂要生产容积为
的圆柱形密封罐.已知相同面积的底的成本为侧面成本的
倍,为使成本最小,则圆柱的高与底面半径之比应为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
3 . 已知三条直线为,
,
,
,则下列结论正确的是( )
A.![]() | B.三条直线的斜率之和为4.5 |
C.三条直线的倾斜角之和为135° | D.三条直线在y轴上的截距之和为![]() |
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2022-12-27更新
|
333次组卷
|
4卷引用:浙江省杭州学军中学2022-2023学年高二上学期12月教学质量检测数学试题
浙江省杭州学军中学2022-2023学年高二上学期12月教学质量检测数学试题河北省石家庄市第一中学东校区2022-2023学年高二上学期教学质量检测数学试题(四)(已下线)高二数学第一学期期期末押题密卷05卷(已下线)专题1.3 两条直线的平行与垂直(2个考点五大题型)-2023-2024学年高二数学《重难点题型·高分突破》(苏教版2019选择性必修第一册)
名校
解题方法
4 . 在平面直角坐标系
中,点A,B的坐标分别为
.设曲线C上任意一点
满足
(
且
).
(1)求曲线C的方程,并指出此曲线的形状;
(2)对
的两个不同取值
,记对应的曲线为
.
(i)若曲线
关于某直线对称,求
的积;
(ii)若
,判断两曲线的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f01b186ac8aa73e1a3609b40b6c3ee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f47f265ff81a7a28ce17249647fc64f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/472393b18c7880e73b40e31fbe2d951c.png)
(1)求曲线C的方程,并指出此曲线的形状;
(2)对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d491ca1d69c14de489ec68aa280c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
(i)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d491ca1d69c14de489ec68aa280c97.png)
(ii)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56510aad1dc776f03ec75bca43954ef4.png)
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2022-12-16更新
|
170次组卷
|
2卷引用:浙江省杭州第四中学下沙校区2022-2023学年高二上学期期中数学试题
5 . An aquarium(养鱼缸)has a rectangular base that measures 100cm by 40cm and has a height of 50cm. It is filled with water to a height of 40cm.A brick(砖)with a rectangular base that measures 40cm by 20cm and a height of 10cm is placed in the aquarium. By how many centimeters does that water rise?( )
A.0.5 | B.1 | C.1.5 | D.2 |
您最近一年使用:0次
名校
解题方法
6 . 设直线
与直线
交于点
,已知点
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/946af29b5bd61926ad3ba61bdf4f6981.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c35fece5593f3053dab27971e9d3b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7867d711cb6a922fa2e0a94eb87b32f.png)
A.当![]() ![]() |
B.当![]() ![]() |
C.当![]() ![]() |
D.当![]() ![]() |
您最近一年使用:0次
2022-11-24更新
|
369次组卷
|
2卷引用:浙江省台金六校2022-2023学年高二上学期期中联考数学试题
解题方法
7 . 已知正三棱锥
的底面边长为6,体积为
,A,B,C三点均在以S为球心的球S的球面上,P是该球面上任意一点,下列结论正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27567d43c5b91382ee3d7ca708ee422.png)
A.三棱锥![]() ![]() |
B.三棱锥![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() |
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2022-11-18更新
|
650次组卷
|
4卷引用:浙江省部分学校2022-2023学年高三上学期12月联考数学试题
浙江省部分学校2022-2023学年高三上学期12月联考数学试题湖北省襄阳市部分学校2022-2023学年高三上学期期中数学试题云南省部分名校2023届高三上学期11月联考数学试题(已下线)2023届高三押题卷二(测试范围:高考全部内容)
解题方法
8 . 在正三棱锥
中,
,
,
,
分别为
,
的中点,若点
是此三棱锥表面上一动点,且
,记动点
围成的平面区域的面积为
,三棱锥
的体积为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00803e67a5d417a9a4dc00277fca778b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/944d33d960a883231dd9bbbe99ba7474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
A.当![]() ![]() | B.当![]() ![]() |
C.当![]() ![]() | D.当![]() ![]() |
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2022-11-14更新
|
363次组卷
|
4卷引用:浙江省温州市2022-2023学年高二上学期期中数学试题
9 . 已知圆
与圆
,点
是圆
上的一点,过圆心
作直线
的平行线与圆
交于
点(
和
不在
轴同侧),
交
轴于点
,以
为直径的圆与圆
的一个交点为
,则圆心
与圆心
到直线
的距离之和是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e8027bfac132ae0bcba1f4c41487e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42c7faba94d8232f89808a5f6b8779d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4218a7ce9c3485e06201b0b7d85ca1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d85623f82c7d166bc6ae6b403cb5b80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6afb5c6e2d0469bfdec81be42542bdc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/61d8dea2-3761-4762-b8f9-7edda603e857.png?resizew=212)
您最近一年使用:0次
10 . 打羽毛球是全民皆宜的运动.标准的羽毛球由16根羽毛固定在球托上,测得每根羽毛在球托之外的长为7cm,若把球托之外由羽毛围成的部分看成一个圆台的侧面,又测得顶端所围成圆的直径是6.8cm,底部所围成圆的直径是2.8cm,则这个圆台的体积约是(单位:
)( )
注:本题运算时
取3,
取2.24,运算最后结果精确到整数位.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33691e3419e3f8f9c2bc36d1627b7541.png)
注:本题运算时
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
A.108 | B.113 | C.118 | D.123 |
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2022-11-11更新
|
480次组卷
|
4卷引用:浙江省金华十校2022-2023学年高三上学期11月月考数学试题