1 . 现在道路上的车辆是越来越多了,如果没有交通规则约束和交通标志指示,那么路上的车辆一定是混杂堵塞,所以开车时一定要看清标志,文明驾车.下列交通标志中,既是轴对称图形又是中心对称图形的是( )
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知一次函数
中
取不同值时,
对应的值列表如下:
则不等式
(其中
,
,
,
为常数)的解为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![]() | … | ![]() | 1 | 2 | … |
![]() | … | -2 | 0 | ![]() | … |
则不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aed512a9453132a67d052436dcf510f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.![]() | B.![]() | C.![]() | D.无法确定 |
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3 . 如图,公路
,
互相垂直,公路
的中点
与点
被湖隔开.若测得
的长为
,则
,
两点间的距离为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/24/b0b652f5-cd3a-4860-ba5f-ca16f3def2b8.png?resizew=180)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5656eaa3a8b00e2b10efe32eb537d5a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/24/b0b652f5-cd3a-4860-ba5f-ca16f3def2b8.png?resizew=180)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 解分式方程
时,去分母化为一元一次方程,正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88649dfe2d9cc2c78b7832170f03171e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 如图,在
中,
.边
在
轴上,顶点
的坐标分别为
和
.将正方形
沿
轴向右平移当点
落在
边上时,点
的坐标为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/7ec06a16-fa77-4e65-bbd5-6b202ae47401.png?resizew=201)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fd6b7c614860e815146b93f45266416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1605bbe50887258ac6cd48ce9bcf88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f87d89b3eb0c40885f5a6f011d9171b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/7ec06a16-fa77-4e65-bbd5-6b202ae47401.png?resizew=201)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 国家统计局统计数据显示,我国快递业务收入逐年增加.2017年至2019年我国快递业务收入由
亿元增加到
亿元.设我国2017年至2019年快递业务收入的年平均增长率为
.则可列方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4b31ff8c25710c8c0d3480f5c18d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eadee265e39fe8ca866ebf90c4305d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
7 . 电子文件的大小常用
,
,
,
等作为单位,其中
,
,
,某视频文件的大小约为
,
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1e8babee63bfc889ae5a34632284bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46c51916d820d220d16e5e0b1e52f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0f07a9179327de1c6b2e55e55a72cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/100b857027755674403f344113291f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/625b6d79b6db62d151ffbba06577c078.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab92d80def6d0d7c7a6e7be36dd7b4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0da86aa2789fbffd77e4e26d90f2bda0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545a2694cef4ea649df397ac50b02c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545a2694cef4ea649df397ac50b02c45.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 如图,反比例函数与正比例函数的图象相交于
、
两点,过点
作
轴于点
.若
的面积是4,则这个反比例函数的解析式为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/9ffd6bc1-896a-4303-98fd-723ef68dc740.png?resizew=172)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2241bd71e0c20867029e489f9ba655d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/9ffd6bc1-896a-4303-98fd-723ef68dc740.png?resizew=172)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 构建几何图形解决代数问题是“数形结合”思想的重要应用,在计算tan15°时,如图.在Rt△ACB中,∠C=90°,∠ABC=30°,延长CB使BD=AB,连接AD,得∠D=15°,所以tan15°![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3848b9086dcdbb4cb69596061cda6edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf540698b5e2fc91de42b87ec6569574.png)
=
.类比这种方法,计算tan22.5°的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/16/330977dd-f267-41bc-bf42-b7c3935ca72d.png?resizew=260)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3848b9086dcdbb4cb69596061cda6edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf540698b5e2fc91de42b87ec6569574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5833c1bb0376f06bd77254ccbfcc49d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47cfe4e08c06bde245e58aa22485044c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/16/330977dd-f267-41bc-bf42-b7c3935ca72d.png?resizew=260)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
10 . 如图①,点
从
的顶点
出发,沿
匀速运动到点
,图②是点
运动时,线段
的长度
随时间
变化的关系图象,其中
是曲线部分的最低点,则
的面积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/3/7491ad95-2e71-4ece-8994-2a873e43c1d0.png?resizew=386)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7012d1ff11db5e150182e19646814cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/3/7491ad95-2e71-4ece-8994-2a873e43c1d0.png?resizew=386)
A.![]() | B.![]() | C.![]() | D.![]() |
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