1 . 已知
,
是平面内的一组基底,
,
,
,若
,
,
三点共线,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0411792b587ddd3e04440392f011c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d660852c5226ff65a21cfb36b8b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b762bd33ee43da74ab19450074105468.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65cac341927963722f7fd1180aa8085f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff40563daf96329ae2084126410a2c59.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.9 | B.13 | C.15 | D.18 |
您最近一年使用:0次
解题方法
2 . 已知某圆柱的轴截面是面积为4的正方形,则该圆柱的内切球的体积为( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 用斜二测画法画三角形OAB的直观图
,如图所示,已知
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a633df6d1b15deeab2acd9040c7177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20f4b71022249a5444911f124431843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80ff12049bb9ee867712067c6367099f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a836d2dfc31d2bfc949bac8403cf2a4e.png)
A.![]() | B.![]() | C.2 | D.4 |
您最近一年使用:0次
4 . 已知圆柱
的底面半径为2,高为3.点O为线段
(不含端点)上一动点.以该圆柱的上、下底面为底面,O为顶点挖去两个圆锥
与
,则剩下的几何体的体积与圆柱
的体积之比为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ac334119ccd6204402a7aba29a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ac334119ccd6204402a7aba29a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192f4f9446c954a291f779d963f90257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a455c83c7d8e4f9a91340eab24896e5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ac334119ccd6204402a7aba29a55.png)
您最近一年使用:0次
解题方法
5 . 如图,在正四棱台
中.
,
,则正四棱台
的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea565cf2a5ce54e287b0edea0f20bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86aa0650b2b5cb33357dd45b241fd584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
A.28 | B.26 | C.24 | D.16 |
您最近一年使用:0次
解题方法
6 . 已知复数
是关于
的一元二次方程
(
,
)的一个根,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acaab42500ffbc4e1d36b55b76967421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f43e49552a5099a8b2a442247c65a243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3276b5e12396fc4753eb3f8254f9fa68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
A.![]() | B.![]() | C.19 | D.31 |
您最近一年使用:0次
7 . 某商场为促销组织了一次幸运抽奖活动,袋中装有8个大小形状相同的小球,并标注
这八个数字,抽奖者从中任取一个球,事件A表示“取出球的编号为奇数”,事件B表示“取出球的编号为偶数”,事件C表示“取出球的编号大于5”,事件D表示“取出球的编号小于5”,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee9ff72d210845d3dfd48842e448d41.png)
A.事件A与事件C不互斥 | B.事件A与事件B互为对立事件 |
C.事件B与事件C互斥 | D.事件C与事件D互为对立事件 |
您最近一年使用:0次
解题方法
8 . 函数
是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7d532b8d4c5def4e646d8415839b6b4.png)
A.最小正周期为![]() | B.最小正周期为![]() |
C.最小正周期为![]() | D.最小正周期为![]() |
您最近一年使用:0次
解题方法
9 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763d061631872c611d5662f7229127a6.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39b44ed068bce3a71927cf342fe06e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763d061631872c611d5662f7229127a6.png)
您最近一年使用:0次
解题方法
10 . 已知向量
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43fa9307f35580493bf435ac6a464b25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd5a6d96e46431eb0d20b531facda401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b1fb8d0f0cd61691eebcea7cf67a950.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
您最近一年使用:0次