名校
1 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca87295f36a2d30a1639592c4b5a7a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0389ca6c49a2af43452fe4cadce801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4198dc12226f85fae2348730c25ab6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
2 . 随机变量X服从正态分布,若
,则
您最近一年使用:0次
今日更新
|
190次组卷
|
2卷引用:天津市滨海新区大港油田实验中学2023-2024学年高二下学期第二次月考数学试卷
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3 . 已知
,
,则
是
的( )条件
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7551ecfe26f56a19cb1e0028732649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f146790725ac5c801492f9e4daf5bc27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分又不必要条件 |
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4 . 在一段时间内,分5次测得某种商品的价格
(万元)和需求量
之间的一组数据,绘制散点图如图所示,利用最小二乘法求得相应的经验回归方程为
,根据上述信息,如下判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce772ff09e1cf3da10a9030664347579.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264ff10a50be87680a56b175a9dde305.png)
价格 | 2 | ||||
需求量 | 12 | 10 | 7 |
A.商品的价格和需求量存在正相关关系 | B.![]() ![]() |
C.![]() | D.价格定为![]() ![]() |
您最近一年使用:0次
昨日更新
|
442次组卷
|
2卷引用:天津市第一中学2023-2024学年高三第五次月考数学试卷
5 . 如图,为测量山高
,选择
和另一座山的山顶
为测量观测点,从
点测得
点的仰角
,
点的仰角
以及
;从
点测
.已知山高
,则山高
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d18e26590da465edaf3cf67b41acf690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a84b65d912559083735708e7f7a6b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd86e942165331c77086cd2231af84a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5990c3408a8139827d12b7009c7b3a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3f262b817cd1cdd0493407ba9b11bd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2b3247afa684b10c8e1da99cf33d5b.png)
A.150 | B.200 | C.250 | D.300 |
您最近一年使用:0次
解题方法
6 . 我国有着丰富悠久的“印章文化”,古时候的印章一般用贵重的金属或玉石制成,本是官员或私人签署文件时代表身份的信物,后因其独特的文化内涵,也被作为装饰物来使用.图1是明清时期的一个金属印章摆件,除去顶部的环可以看作是一个正四棱柱和一个正四棱锥组成的几何体,如图2.已知正四棱柱和正四棱锥的底面边长为4,体积之比为3:1,且该几何体的顶点在球
的表面上,则球
的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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7 . 已知
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3076ec3619fca3f7acf9b02d0f36b8f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fb9f255f1fe4ded50a8a2c18e2bb6fb.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
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8 . 已知某种商品的广告费投入
与销售额
之间有如下对应数据:根据上表可得回归方程
,计算得
,则当投入为6时,销售额的预报值为( )
![](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/1db6103cb0f1d2bd6b19235d53ee7e98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe8963e91a0b95f502584ffe2803d0c9.png)
2 | 4 | 5 | 6 | 8 | |
30 | 40 | 50 | 60 | 70 |
A.50 | B.60 | C.57 | D.85 |
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解题方法
9 . 已知数列
为各项不为零的等差数列,
为数列
的前
项和,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7702425507306b9722fd26b35eb1f1cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
A.4 | B.8 | C.12 | D.16 |
您最近一年使用:0次
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解题方法
10 . 在正方形
中,
,
分别是
,
边的中点,
与
相交于点
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eb4713985fd15713e52c5001059345c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次