将矩形纸板剪掉一个小矩形后剩余部分如图1所示,动点
从点
出发,沿路径
匀速运动,速度为
,点
到达终点
后停止运动,
的面积
与点
运动的时间
(s)的关系如图2所示,根据图象获取了以下的信息:①
;②
;③点
从点
运动到点
需要
s;④矩形纸板裁剪前后周长均为
.其中正确信息的个数有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f557ea9ccc1d381f3dfbb7d52048e26c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9174c3b1324cf81098e42e0480bcc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceff3844281849df3e37a2e56e110549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fd83e13b347d529abd3e4b1e7e5e50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03435a58161ed03bded6b924ad2b5c6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08ce80e91fdf435a8e3ec05be990e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b83fd4e9e7d53da94e900db14d01bbf.png)
A.4个 | B.3个 | C.2个 | D.1个 |
更新时间:2024-05-07 21:34:34
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【推荐1】在三角形ABC中,AB=8,AC=9,BC=10.P0为BC边上的一点,在边AC上取点P1,使得CP1=CP0,在边AB上取点P2,使得AP2=AP1,在边BC上取点P3,使得BP3=BP2,若P0P3=1,则CP0的长度为( )
![](https://img.xkw.com/dksih/QBM/2018/2/6/1876489712222208/1879163694432256/STEM/eea7b6c67a7f4cfca55b36df69129e1e.png?resizew=113)
![](https://img.xkw.com/dksih/QBM/2018/2/6/1876489712222208/1879163694432256/STEM/eea7b6c67a7f4cfca55b36df69129e1e.png?resizew=113)
A.4 | B.6 | C.4或5 | D.5或6 |
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【推荐2】如图,D、E分别是
ABC边BC、AB边上的中点,F是AD上一点且
,若阴影部分的面积为9,则
ABC的面积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/17/b403f37f-e0a8-4f75-8c19-d63ed1f8fa3a.png?resizew=182)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0af2782b48ddfe2e959f4ad9f6e579d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/17/b403f37f-e0a8-4f75-8c19-d63ed1f8fa3a.png?resizew=182)
A.18 | B.16 | C.15 | D.14 |
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【推荐1】自驾游是当今社会一种重要的旅游方式,五一放假期间小明一家人自驾去灵山游玩,下图描述了小明爸爸驾驶的汽车在一段时间内路程s(千米)与时间t(小时)的函数关系,下列说法中正确的是( )
![](https://img.xkw.com/dksih/QBM/2019/6/3/2217806153564160/2223557913034752/STEM/01113388d2414ba28ccdc9c2c9dfa779.png?resizew=220)
![](https://img.xkw.com/dksih/QBM/2019/6/3/2217806153564160/2223557913034752/STEM/01113388d2414ba28ccdc9c2c9dfa779.png?resizew=220)
A.汽车在0~1小时的速度是60千米/时 |
B.汽车在2~3小时的速度比0~0.5小时的速度快 |
C.汽车从0.5小时到1.5小时的速度是80千米/时 |
D.汽车行驶的平均速度为60千米/时 |
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【推荐2】小王骑车从甲地到乙地,小李骑车从乙地到甲地,小王的速度小于小李的速度,两人同时出发,沿同一条公路匀速前进.图中的折线表示两人之间的距离y(km)与小王的行驶时间x(h)之间的陌数关系,下列结论错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/29/1f86bd9a-21e6-4015-b834-b23b5feca6b4.png?resizew=256)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/29/1f86bd9a-21e6-4015-b834-b23b5feca6b4.png?resizew=256)
A.小王骑车的速度为10km/h |
B.小李骑车的速度为20km/h |
C.a的值为15 |
D.走完全程,小李所用的时间是小王的![]() |
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【推荐1】如图1,E为矩形ABCD边AD上一点,点P从点B沿折线BE→ED→DC,运动到点C 时停止;点Q从点B沿BC运动到点C时停止.它们运动的速度都是1cm/s.若P,Q同时开始运动,设运动时间为t(s),△BPQ的面积为y(cm2).已知y与t的函数图象如图2,则下列结论错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/3/dfd01bc7-9300-4116-87bd-6d4178ba4787.png?resizew=280)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/3/dfd01bc7-9300-4116-87bd-6d4178ba4787.png?resizew=280)
A.BE=10cm | B.AB=8cm | C.AE=6cm | D.BC=14cm |
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【推荐2】如图,在矩形
中,对角线
的垂直平分线
交
于点
,交
于点
.设
,则
关于
的函数图像大致为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/854e61f1-1fb0-491b-9bb5-2673296fdbf6.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761643963fae575059aee9dc1c4e23ce.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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