1 . 一个球体被平面截下的一部分叫做球缺.截面叫做球缺的底面,垂直于截面的直径被截后,剩下的线段长叫做球缺的高,球缺曲面部分的面积
,其中R为球的半径,H为球缺的高.如图,若一个半径为R的球体被平面所截获得两个球缺,其高之比为
,则表面积(包括底面)之比
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46b2352d6e9006c348bf16c7c07ed3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/248dd5b7551fbad77be14de45196cc6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
2 . 已知复数
满足
,
,x,
,
,
所对应的向量分别为
,
,其中O为坐标原点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5051b1f85b748ee96a0593731c1b1c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f6398f6c1b247ccb5da442f9c5b4d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f370a1d4dd341e5ab1774a66c66c1204.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a30deb1f343048675b9b231620369668.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1640d3fff861f45c5eb4019943b000f.png)
A.![]() ![]() |
B.当![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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3 . 设a为常数,函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f23c2ccdc684f3abcfe81be63690b8.png)
(1)设
,求函数
的单调区间及周期T;
(2)若函数
为偶函数,令
,此函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f23c2ccdc684f3abcfe81be63690b8.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0db0a863a3586005c060c785b95a2174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
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解题方法
4 . 已知角
,且角θ的终边所在直线经过点
,则x的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f641ca2c6b001b2e67588cdbfb391a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eee9f76dc5eb17f976a3fe3b565e8284.png)
A.±2 | B.2 | C.-2 | D.-4 |
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5 . 北极阁位于鹰潭公园的东侧,前门是大码头,旧时为鹰潭最繁华的街市.某同学为测量北极阁的高度MN,在北极阁的正北方向找到一座建筑物AB,高约为30m,在地面上点C处(B,C,N三点共线)测得建筑物顶部A,北极阁顶部M的仰角分别为30°和45°,在A处测得北极阁顶部M的仰角为15°,北极阁的高度约为( )
A.45m | B.52m | C.60m | D.65m |
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解题方法
6 . 如图,
是等腰直角三角形,
,四边形ABCM是直角梯形,
,
,且
,平面ADM⊥平面ABCM.
(1)求证:
;
(2)若点E是线段DB上的一动点,问点E在何位置时,三棱锥
的体积为
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f9fba8a4098c1a0515286eb8d616dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae17686725a5ecc001c809cfc35d1429.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4685bc53d11be0f30476c377d76561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1801ddbdf49f88c1800b422f108f0ec7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/27/c7fc375c-5050-43a8-905c-779f02f7cd86.png?resizew=156)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/804c0e2a375b5f4ff1c420532968efc3.png)
(2)若点E是线段DB上的一动点,问点E在何位置时,三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6fea520be511f0bca09d795851b0fa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27a93cab4f52dcd428230d68bde791c.png)
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7 . 在棱长为4的正方体
中,点E为棱
的中点,点F是正方形
内一动点(含边界),则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
A.直线![]() |
B.平面![]() |
C.若![]() |
D.若![]() ![]() ![]() |
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2023-07-18更新
|
623次组卷
|
3卷引用:江西省鹰潭市2022-2023学年高一下学期期末质量检测数学试题
名校
8 . 已知向量
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69804de4a5c14675e2e4dfb5927d2165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5852b018dc11e774351c762612b8be7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf21fef3026cfe445a855c94cab5c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0ee058d80bf1f695e71ad49beb81f81.png)
A.![]() | B.![]() | C.3 | D.5 |
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2023-05-29更新
|
648次组卷
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6卷引用:江西省鹰潭市2022-2023学年高一下学期期末质量检测数学试题
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解题方法
9 . 在锐角
中,角
的对边分别为
,且满足
.若
恒成立,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0071e88b38326a3355b331d8081c509c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/676f34f3c036dcb2cd9bed14a34ad9e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-05-27更新
|
416次组卷
|
3卷引用:江西省鹰潭市2022-2023学年高一下学期期末质量检测数学试题
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解题方法
10 . 已知函数
的部分图象如图所示,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f02695b063e9351ea1816a7da5c5451.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/28/57fd228c-66a1-467d-813b-7b8289233bb6.png?resizew=192)
A.![]() |
B.![]() |
C.点![]() ![]() |
D.函数![]() ![]() ![]() |
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2023-05-26更新
|
1514次组卷
|
5卷引用:江西省鹰潭市2022-2023学年高一下学期期末质量检测数学试题