名校
1 . 如图,在平行四边形
中,
为垂足,
为
的中点,若
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/de8f107f-ad69-4e55-a5ee-440cbb496420.png?resizew=140)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa43e829f9fb8691c5abbbf027025825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057c80b13976fb14e7fd9acabecb9ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afde09d82ae96f00c135732baee64776.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/de8f107f-ad69-4e55-a5ee-440cbb496420.png?resizew=140)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2 . 如图,
和
都是等腰直角三角形,
,点
是
边上的动点(不与点
重合),
与
交于点
,连结
.下列结论:①
;②
;③若
,则
;④在
内存在唯一一点
,使得
的值最小,若点
在
的延长线上,且
的长为2,则
.其中含所有正确结论的选项是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/c97f2312-d633-4a41-9b9f-9f1a8ef4d224.png?resizew=183)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c240781f88a6295b9d31036be90454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e453b6640e3dc4c7b7b2a996a2199ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8196909b00ad21a6ac480fcbf1be1fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d78524f98b01fa1dadfd277939665b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f851611fd6dc911fa2de74950d06387.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7ed53a398b1d6b7b4abbb43a9abcf1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc6298622cdc6425dfc18147f88194b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/c97f2312-d633-4a41-9b9f-9f1a8ef4d224.png?resizew=183)
A.①②④ | B.①②③ | C.①③④ | D.①②③④ |
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3 . 对于任何有理数a,下列各式中一定为负数的是( )
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 在下列算式中,计算结果是负数的是( )
A.|-3| | B.![]() | C.(-5)-(-3) | D.(-3)×(-4) |
您最近一年使用:0次
名校
5 . 已知二次函数
的图象上有两个不重合的点
,若
,则点
的轨迹是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bebe4effa790eb7d86d359aecbc051d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ec6f5b958b3d00befdc2b2981774e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1292c47f62023b747f1a4bd615c75284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82aaa597a5aa6176863eda3fdf83e181.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
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6 . 桌子上有6只杯口朝上的茶杯,每次翻转其中的4只,经过
次翻转可使这6只杯子的杯口全部朝下,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.2 | B.3 | C.4 | D.5 |
您最近一年使用:0次
2022-09-10更新
|
191次组卷
|
2卷引用:湖北省武汉市华中师范大学第一附属中学2022-2023学年高一上学期新生入学测试数学试题
名校
7 . 一辆汽车开往距出发地420km的目的地,若这辆汽车比原计划每小时多行10km,则提前1小时到达目的地.设这辆汽车原计划的速度是
,根据题意所列方程是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65bd4ec7c090c1f5f8e9fadd52d2bf0.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
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8 . 一个正多边形每个内角与它相邻外角的度数比为
,则这个正多边形是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84783b6ba0f36789519816101a437f46.png)
A.正方形 | B.正六边形 | C.正八边形 | D.正十边形 |
您最近一年使用:0次
9 . 《九章算术》是人类科学史上应用数学的最早巅峰,是一部问题集,全书分为九章,共收有246个问题,每个问题都有问、答、术三部分组成,内容涉及算术、代数、几何等诸多领域,并与实际生活紧密相连,充分体现了中国人的数学观和生活观.书中第九卷勾股部分记录了这么一个问题:问:今有圆材埋在壁中,不知大小,以锯锯之,深一寸,锯道长一尺,问径几何?术曰:半锯道自乘,如深寸而一,以深寸增之,即材径.如图,术曰所给出的求解公式为:
,则答曰( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/7/57d4f5d3-0270-4853-8090-b292df6efdc2.png?resizew=176)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dd0e0872f6998260f1d8467744d856a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/7/57d4f5d3-0270-4853-8090-b292df6efdc2.png?resizew=176)
A.二尺六寸 | B.二尺五寸 | C.一尺三寸 | D.一尺二寸 |
您最近一年使用:0次
2022-09-09更新
|
431次组卷
|
5卷引用:四川省达州市开江县开江中学2022-2023学年高三上学期入学考试数学(文)试题
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10 .
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a196420e2005a4357d5defe64ef95a15.png)
A.4 | B.![]() | C.![]() | D.2 |
您最近一年使用:0次