解题方法
1 . “阿基米德多面体”也称为半正多面体,是由边数不全相同的正多边形为面围成的多面体,它体现了数学的对称美.如图,是一个八个面为正三角形,六个面为正方形的“阿基米德多面体”,某玩具厂商制作一个这种形状棱长为
,重量为
的实心玩具,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd6f4250ca6b1b9bce234a01f00d44d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7808a98cf04a37b0358c1e855ee4347.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/37fbe650-3516-418a-b898-3bb8c8825d10.png?resizew=161)
A.将玩具放到一个正方体包装盒内,包装盒棱长最小为![]() |
B.将玩具放到一个球形包装盒内,包装盒的半径最小为![]() |
C.将玩具以正三角形所在面为底面放置,该玩具的高度为![]() |
D.将玩具放至水中,其会飘浮在水面上. |
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2024-02-28更新
|
883次组卷
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3卷引用:浙江省金华十校2023-2024学年高二上学期1月期末调研考试数学试题
2 . 已知函数
,
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4a29fd093745c5c8602450709d66b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9ce4e82eec17b60cc0cf34f0394e42.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.对于![]() ![]() ![]() |
D.对于![]() ![]() ![]() |
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名校
解题方法
3 . 日常生活中植物寿命的统计规律常体现出分布的无记忆性.假设在一定的培养环境下,一种植物的寿命是取值为正整数的随机变量
,根据统计数据,它近似满足如下规律:对任意正整数
,寿命恰好为
的植物在所有寿命不小于
的植物中的占比为
.记“一株植物的寿命为
”为事件
,“一株植物的寿命不小于
”为事件
.则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28555fa2f3a09261cb4e0305d390145.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
A.![]() |
B.![]() |
C.设![]() ![]() |
D.设![]() ![]() |
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2024-02-27更新
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1856次组卷
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4卷引用:浙江省名校协作体2023-2024学年高三下学期返校考试数学试卷
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解题方法
4 . 已知边长为
的正
边形
.若集合
且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd76ce38a05b798d45147dd2fe05294e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f3f27ff5801fe81ceea7e51340f25cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79775420dd7ab3b6749a40d32a8fb553.png)
A.当![]() ![]() |
B.当![]() ![]() |
C.当![]() ![]() |
D.当![]() ![]() |
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2024-02-23更新
|
315次组卷
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4卷引用:浙江省宁波市九校2023-2024学年高一上学期1月期末联考数学试题
浙江省宁波市九校2023-2024学年高一上学期1月期末联考数学试题广东省江门市某校2023-2024学年高一下学期第一次质量检测数学试题(已下线)2.5 从力的做功到向量的数量积-同步精品课堂(北师大版2019必修第二册)(已下线)高一数学期末测试卷01-《期末真题分类汇编》(人教B版2019必修三+必修四)
名校
5 . 设
,向量
,向量
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3744ee15af01a8e7c0f126edb5f68132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e006532171d56180cf56bb4538cf2e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6226f1ceaf1647c036bf563e0edf5ac4.png)
A.![]() |
B.![]() |
C.存在![]() ![]() |
D.对任意![]() |
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2024-02-23更新
|
1266次组卷
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5卷引用:浙江省L16联盟2023-2024学年高三下学期返校适应性测试数学试题
6 . 已知
,
,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb353115daa8100e74165461045a9ae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deba64845418cb79cee8e94bd9119725.png)
A.当![]() ![]() |
B.当![]() ![]() |
C.若![]() ![]() |
D.当![]() ![]() |
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7 . 抛物线
:
的焦点为
,过
作倾斜角为
的动直线
交抛物线于
两点(
在第一象限),且
,设
关于
轴的对称点为
,则下列说法一定正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea1ce7588f88b39746159233be9cd82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588ba7b97174e554e5e972347dff3d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
8 . 已知点
是抛物线
:
上一点,过点P作抛物线
:
的两条切线PM,PN,切点分别为M,N,H为线段MN的中点,F为
的焦点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e79a63751d6bfbe2fcb14ffd5a2e24fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d5545195ade2bda359e683715332e83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
A.若![]() | B.直线![]() |
C.点H的轨迹方程为![]() | D.![]() |
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解题方法
9 . 已知三棱锥
如图所示,G为
重心,点M,F为
中点,点D,E分别在
上,
,
,以下说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4464c4de8e55ae43a3ba752070826d07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd95eaf34ef0c66569901f57e54d099d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/088a94009620f7efe7f5cd884f99867f.png)
A.若![]() ![]() ![]() |
B.![]() |
C.![]() |
D.若M,D,E,F四点共面,则![]() |
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10 . 已知
为直线
上的一点,动点
与两个定点
,
的距离之比为2,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1fd72f36c81a55cafa92739ee87f743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1a9821a00b71f6b7d7a76d91b3f810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2b1f4120365cb6ee4925fe417563f9.png)
A.动点![]() ![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() |
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