名校
1 . 已知互不重合的直线
,
,互不重合的平面
,
,
,下列命题错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
2023-04-22更新
|
2019次组卷
|
9卷引用:广西南宁市普高联盟2022-2023学年高一下学期期末联考数学试题
名校
2 . 某企业为了响应落实国家污水减排政策,加装了污水过滤排放设备,在过滤过程中,污染物含量
(单位:mg/L)与时间
(单位:h)之间的关系为
(其中
,
是正常数),已知经过1h,设备可以过滤掉50%的污染物,则过滤掉80%的污染物需要的时间约为(结果精确到0.01h,参考数据:
)( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6debecad757422b4a484e0256a2033c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb44db1dc864ff4901be1e10da79747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f4d8318aba2dd01bfdc4c6b77c6121.png)
A.1.53h | B.1.60h | C.1.75h | D.2.33h |
您最近一年使用:0次
3 . 设
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27dfcbd91bdddab2e20caecc01649b01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e591ca26d653eea1d47e7cf4d197d1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e1742faf20905475a13498e66bab1cd.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
4 . 已知
,
,
,则a,b,c的大小关系为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a38a29d487f57468affec680489bbbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04a7551d073a061eef22c9e127d6deeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7334d90c3e640f692f87339856089a77.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-04-22更新
|
411次组卷
|
2卷引用:广西南宁市第二中学2023届高三高考考前模拟大演练数学(文)试题
名校
5 . 已知函数
,
,
,其中
为自然对数的底数.
(1)讨论
的单调性;
(2)当
时,证明:对于
,都有
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99f4ce63ecec208598b23202ae211bb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a638b5a60d9a3dc23e23b5472874f785.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fad1dd76d5b72f10f5bb62693a2996f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447d6f62c09c1d05346fd16a24159f6e.png)
您最近一年使用:0次
2023-04-21更新
|
476次组卷
|
3卷引用:广西南宁市第二中学2023届高三高考考前模拟大演练数学(文)试题
解题方法
6 . 已知函数
,
的定义域均为
,
为
的导函数,且
,
,若
为偶函数,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22add663bd26e87d972a10dc5fd9ada1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f11bce65a73ba0eddaf389c5907c3b38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539860cd018dd292e4cef86fdc8176cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c291fa12874ec93f2f3a8555c9825bb.png)
A.0 | B.1 | C.2 | D.4 |
您最近一年使用:0次
7 . 已知椭圆
与双曲线
有共同的焦点
,
,离心率分别为
,
,点
为椭圆
与双曲线
在第一象限的公共点,且
,若
,则椭圆
的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17618d8d22ebb3fd6835a7eb139b4f95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13683e2ecf2164a0adbfdb9923d210a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33558881906c228c262ff8024dcfc4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33a99190a8fd29c36d5a002e3197cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7285470bf401f5edaac641234ee6ff6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5965cd78ceae7742cd8020a06ae5450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-04-21更新
|
691次组卷
|
4卷引用:广西南宁市2023届高三二模数学(理)试题
8 . 从某中学甲、乙两班各随机抽取10名同学,测量他们的身高(单位:cm),所得数据用茎叶图表示如图,由此可估计甲、乙两班同学的身高情况,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/2023/4/19/3219872553058304/3220798436442112/STEM/04062dc09c194c96a5579d320068a897.png?resizew=195)
![](https://img.xkw.com/dksih/QBM/2023/4/19/3219872553058304/3220798436442112/STEM/04062dc09c194c96a5579d320068a897.png?resizew=195)
A.甲乙两班同学身高的极差相等 |
B.乙班同学身高的平均值较大 |
C.甲乙两班同学身高的中位数相等 |
D.甲班同学身高在175cm以上的人数较多 |
您最近一年使用:0次
名校
9 . 已知复数
,则
的虚部为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0aca819f01ba465bd87149062523cbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
A.![]() | B.![]() | C.1 | D.![]() |
您最近一年使用:0次
2023-04-20更新
|
649次组卷
|
5卷引用:广西南宁市2023届高三二模数学(文)试题
名校
10 . 函数
的部分图象如图所示,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e658113eadee1b45111b2a927c24e2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b87f4ef298bdeebf59a0d850aff72c.png)
A.![]() | B.![]() | C.![]() | D.1 |
您最近一年使用:0次
2023-04-20更新
|
787次组卷
|
5卷引用:广西南宁市2023届高三二模数学(文)试题