1 . 已知向量
,
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8de409b99dce4aeeb55f6968cb322f6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c708e9b2f4f3083cd8ac9cd72902fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.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
名校
解题方法
2 . 已知双曲线
的一条渐近线的倾斜角为
,则此双曲线的离心率
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
A.2 | B.![]() | C.2或![]() | D.![]() |
您最近一年使用:0次
3 . 命题“
”的否定是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ad2a4bab40ccb7dc8203051aebf435f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
4 . 现有一块边长为
米的正方形铁板,如果从铁板的四个角各截去一个边长相等的小正方形,然后做成一个长方体形的无盖容器,为了使容器的容积最大,则截去的小正方形边长应为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
5 . 函数
的导数
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37168ef2fcc617d7ab9f4320d8f7fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbbefef7b3281be333606691debb669a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 函数
的图象如图所示,且
是
的导函数,记
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090a91e4f3c8930674f98a9fa527709b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b8db702df0d25b9e7507c3b96ca45c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0368995a83d85875efe6bb0cd3781fbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812d60f20654f16a7268c79190b7366b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7 . 已知双曲线
:
的左,右焦点分别为
,
,过
的直线与双曲线
的右支交于
,
两点,且
,则
的周长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a0bd4bd9985f1e367c100b453ed03f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0907a673d52825cd7df84b400972d4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ff8a5886e42095da57422c8777c10d.png)
A.20 | B.22 | C.28 | D.36 |
您最近一年使用:0次
名校
8 . 不等式
恒成立,则实数
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d115c5b723267d593b857558d30e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.1 | D.2 |
您最近一年使用:0次
9 . 已知函数
的图象如图所示,则下列正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1fe33333a7b288483b94dc0b28317e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
10 . 已知点
为抛物线
上一点,且点
到抛物线的焦点
的距离为3,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea77904446ed289b8750a23111c3229c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c2f156b05838deaae6a35acad242af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
A.![]() | B.1 | C.2 | D.4 |
您最近一年使用:0次