如图7,边长都是1的正方形和正三角形,其一边在同一水平线上,三角形沿该水平线自左向右匀速穿过正方形.设穿过的时间为t,正方形与三角形重合部分的面积为S(空白部分),那么S关于t的函数大致图象应为 ( )
![](https://img.xkw.com/dksih/QBM/2012/6/15/1573407236292608/null/STEM/f71e4602f9934322b016b53f4f0675e2.png?resizew=441)
![](https://img.xkw.com/dksih/QBM/2012/6/15/1573407236292608/null/STEM/f71e4602f9934322b016b53f4f0675e2.png?resizew=441)
A.![]() | B.![]() | C.![]() | D.![]() |
2012·山东德州·一模 查看更多[1]
(已下线)2012届山东省宁津县实验中学九年级中考模拟数学试卷
更新时间:2012-06-15 08:07:43
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【推荐1】如图,在
中,
,
.
与矩形
的一边
都在直线
上,其中
、
、
,且点
位于点
处.将
沿直线,向右平移,直到点
与点
重合为止.记点
平移的距离为
,
与矩形
重叠区域面积为
,则
关于
的函数图象大致为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82773737609e65dea3c5c67099f1b10d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1496042c1d721cffd25053e997a9a97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】把两个全等的等腰直角三角形透明纸片
如图1放置(点
与点
重合),若将
绕点
在平面内旋转,
分别交边
于点
(点
均不与点
重合).设
,在旋转过程中,
与
的函数关系图象如图2所示,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/755bc7cd9826a40064dee3d070b12f0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f3f9f4edf520ce61c8e83a2be394d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34037640e6fb8f837faf0d1583231e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a51949f48ee8cf746851ba779b078e.png)
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A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐1】如图,在平面直角坐标系中,点A,B的坐标分别为(1,0),(0,2),某抛物线的顶点坐标为D(-1,1)且经过点B,连接AB,直线AB与此抛物线的另一个交点为C,则S△BCD:S△ABO=( )
![](https://img.xkw.com/dksih/QBM/2019/2/14/2140568270897152/2141310923907072/STEM/59325e09e1404da0be3bfbf507c52cf3.png?resizew=93)
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A.8:1 | B.6:1 | C.5:1 | D.4:1 |
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【推荐2】如图,点E为矩形ABCD边AD上一点,点P、点Q同时从点B出发,点P沿BE→ED→DC运动到点C停止,点Q沿BC运动到点C停止,它们运动的速度都是1cm/s,设P、Q出发t秒时,△BPQ的面积为y cm,已知y与t的函数关系式(如图所示,曲线OM为抛物线的一部分),则下列结论错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/8/192fb47e-bafb-4001-a02e-4f09e97431b1.png?resizew=169)
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A.![]() ![]() | B.当![]() ![]() ![]() |
C.直线NH的解析式为![]() | D.![]() |
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