名校
1 . 设集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98ecfa5aeaf5388f8780b0f960d330ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-08-23更新
|
1179次组卷
|
7卷引用:云南省昆明市2018-2019学年高二下学期期末考试数学(文)试题
2018高一上·全国·专题练习
2 . 直线l:2mx–y+2–2m=0与圆C:x2+(y–1)2=5的位置关系是
A.相交 | B.相切 | C.相离 | D.不确定 |
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3 . 如图,AB为⊙O的直径,BD是⊙O的切线,连接AD交⊙O于E,若BD∥CE,AB交CE于M,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e4b0311cb57d78f465a57dc7f26353c.png)
![](https://img.xkw.com/dksih/QBM/2018/12/5/2090404214185984/2094345211813888/STEM/647c1bdc-8188-4995-bad2-424c20db0e6d.png)
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4 . 如图所示,在正三角形
中,
分别在
上,且
,
,则有
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519249920/STEM/d52142abcce345a884f8ebfcd413cb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5881068127a39caf319492b4177204f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b7f4d3c66b40527658995411096d901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c45087cde2d66377517a3fce5553b35.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519249920/STEM/d52142abcce345a884f8ebfcd413cb60.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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5 . 若三角形的三条边之比为3:5:7,与它相似的三角形的最长边为
,则其余两边的长度之和为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46dfb41bf21292ed4ba45d576148756.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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6 .
中,
,
,垂足为
.若
,
,则
长为
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519454720/STEM/8b0209d571444264bde61c0c775fd7d8.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519454720/STEM/8376401c404342628e9e9523fab5ae02.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519454720/STEM/a93307c0cf184cd5a5c45b62bed1fa6d.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519454720/STEM/2afb9963cea14c7eb24786f9a7918751.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519454720/STEM/75006e016ea24c22816ab8c40c73d181.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519454720/STEM/d1ccc189b8ed456ea68b3a36e6978f15.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472519102464/1619472519454720/STEM/c1ee1f118ffa49de96b21d88cbae417a.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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7 . 如图所示,已知
是圆心,直径
和弦
相交于点
,
,
,
,则
等于
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/3921ec3c590445baa52a1041fd79ab28.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/d078ad3c5e304917969a5aa2637fb94a.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/46a3f5efc0014ce6bf83a536bc3d05d9.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/0265cd0807b94ce28d417b8cee9202cf.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/32b78dd824ba4c139fdec2dbcf656d84.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/13a221a800c94202b39b9ed179bda3bb.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/5a8ad33512354a158f701b6ec772fa42.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/532c4f12fc4c4f66904c9f31d9674345.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/46a3f5efc0014ce6bf83a536bc3d05d9.png)
![](https://img.xkw.com/dksih/QBM/2017/1/25/1619472216219648/1619472216457216/STEM/3921ec3c590445baa52a1041fd79ab28.png)
A.3 | B.8 |
C.12 | D.14 |
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8 . 一个扇形的弧长与面积都是5,则这个扇形圆心角的弧度数为
A.![]() | B.![]() | C.![]() | D.![]() |
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2016-12-03更新
|
389次组卷
|
2卷引用:2014-2015学年山东省临沭县高一下学期期中教学质量抽测数学试卷
13-14高二上·黑龙江双鸭山·期末
9 . 如图,用与底面成
角的平面截圆柱得一椭圆截线,则该椭圆的离心率为
![](https://img.xkw.com/dksih/QBM/2013/3/27/1571163345985536/1571163351212032/STEM/b4a704e56f5b4b2ba073a7bbea01d0a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6d0da8d77360826b3c500dcf812dc34.png)
![](https://img.xkw.com/dksih/QBM/2013/3/27/1571163345985536/1571163351212032/STEM/b4a704e56f5b4b2ba073a7bbea01d0a3.png)
A.![]() | B.![]() | C.![]() | D.非上述结论 |
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9-10高二下·河南焦作·期末
10 . 已知,如图,在梯形ABCD中,AD∥BC,AD=3,BC=7,点M,N分别是对角线BD,AC的中点,则MN=
![](https://img.xkw.com/dksih/QBM/2014/11/10/1571892604821504/1571892610424832/STEM/efd44bfec3544256b3ebb2de320a755f.png)
![](https://img.xkw.com/dksih/QBM/2014/11/10/1571892604821504/1571892610424832/STEM/efd44bfec3544256b3ebb2de320a755f.png)
A.2 | B.5 | C.![]() | D.![]() |
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