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1、精编学习资料欢迎下载初中数学组卷一选择题（共20小题）1如图，在同一平面直角坐标系中，反比例函数y=与一次函数 y=kx1（k 为常数，且 k0）的图象可能是（）ABCD2抛物线 y=x22x+m2+2（m 是常数）的顶点在（）A第一象限B第二象限C 第三象限D第四象限3如图，在距离铁轨200 米的 B 处，观察由南宁开往百色的“和谐号”动车，当动车车头在 A 处时，恰好位于 B处的北偏东 60 方向上；10 秒钟后，动车车头到达 C处，恰好位于 B 处的西北方向上，则这时段动车的平均速度是（）米/秒A20（+1）B 20（1）C200 D3004如图是一个正六棱柱的茶叶盒，其俯视图为（）精编
2、学习资料欢迎下载AB C D5如图，ABC的三个顶点分别为A（1，2），B（4，2），C（4，4）若反比例函数 y=在第一象限内的图象与 ABC有交点，则 k 的取值范围是（）A1k4 B2k8 C2k16 D8k166如图，矩形 OABC中，A（1，0），C（0，2），双曲线 y=（0k2）的图象分别交 AB，CB于点 E，F，连接 OE，OF，EF，SOEF=2SBEF，则 k值为（）AB1 C D7如图，抛物线 y=ax2+bx+c（a0）的对称轴为直线 x=2，与 x 轴的一个交点在（3，0）和（4，0）之间，其部分图象如图所示 则下列结论：4ab=0；c0；3a+c0；4a2bat2
3、+bt（t 为实数）；点（，y1），（，文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X
4、7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:C
5、C1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 H
6、V9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO
7、6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码
8、:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5
9、 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8精编学习资料欢迎下载y2），（，y3）是该抛物线上的点，则y1y2y3，正确的个数有（）A4 个 B 3 个 C 2 个 D1 个8已知抛物线 y=ax2（a0）过 A（2，y1）、B（1，y2）两点，则下列关系式一定正确的
10、是（）Ay10y2By20y1C y1y20 Dy2y109在正方形网格中，ABC的位置如图所示，则cosB的值为（）ABC D110如图 1 是手机放在手机支架上，其侧面示意图如图2 所示，AB，CD是长度不变的活动片，一端 A 固定在 0A上，另一端 B可在 0C上变动位置，若将 AB变到 AB 的位置，则 0C旋转一定角度到达0C 的位置已知 0A=8cm，AB0C，B0A=60，sinBA0=，则点 B 到 0A的距离为（）文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8
11、文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10
12、A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z
13、4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8
14、I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B
15、10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E
16、7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9
17、B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8精编学习资料欢迎下载Acm Bcm Ccm Dcm11如图，空心卷筒纸的高度为12cm，外径（直径）为 10cm，内径为 4cm，在比例尺为 1：4 的三视图中，其主视图的面积是（）Acm2Bcm2C 30cm2D7.5cm212如图是按 1：10 的比例画出的一个几何体的三视图，则该几何体的侧面积是（）A200cm2B600cm2C100cm2D200cm213给出下列函数：y=2x；y=2x+1；y=（x0）；y=x2（
18、x1），其中 y 随 x 的增大而减小的函数是（）ABCD14在函数的图象上有三点A1（x1，y1）、A2（x2，y2）、A3（x3，y3），若x10 x2x3，则下列正确的是（）Ay10y2y3By2y30y1Cy2y3y10 D0y2y1y315抛物线 y=x2+bx+c 上部分点的横坐标x，纵坐标 y 的对应值如下表所示：文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B1
19、0A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7
20、Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B
21、8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2
22、B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3
23、E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B
24、9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1
25、Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8精编学习资料欢迎下载x21012y04664从上表可知，下列说法中，错误的是（）A抛物线于 x 轴的一个交点坐标为（2，0）B抛物线与 y 轴的交点坐标为（0，6）C抛物线的对称轴是直线x=0D抛物线在对称轴左侧部分是上升的16若 A（4，y1），B（3，y2），C（1，y3）为二次函数y=x2+4xm 的图象上的三点，则 y1，y2，y3的大小关系是（）Ay1y2y3By2y1y3C y3y1y2Dy1y317重庆市南岸区协信星光时代广场已成为人们周末休闲娱乐的重要场所，协信星光时代广场从一楼到二楼有一自动扶梯（如图1），图
26、2 是侧面示意图，已知自动扶梯 AC的坡度（或坡比）i=1：2，AC=6米，BE是二楼楼顶，EF MN，点 B在 EF上且在自动扶梯顶端C的正上方，若 BC EF，在自动扶梯底端A 处测得 B点仰角为 40，二楼的层高 BC约为（精确到 0.1 米，参考数据：sin40 0.64，cos400.77，tan40 0.84）（）A3.6 米B4.9 米C4.1 米D5.2 米18某校八年级生物兴趣小组租两艘快艇去微山湖生物考察，他们从同一码头出发，第一艘快艇沿北偏西70 方向航行 50 千米，第二艘快艇沿南偏西20 方向航行 50 千米，如果此时第一艘快艇不动，第二艘快艇向第一艘快艇靠拢，那么第
27、文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10
28、A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z
29、4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8
30、I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B
31、10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E
32、7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9
33、B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8精编学习资料欢迎下载二艘快艇航行的方向和距离分别是（）A南偏东 25，50千米B北偏西 25，50千米C南偏东 70，100 千米D北偏西 20，100 千米19如图，在平面直角坐标系中，直线 y=x+2 与 x 轴交于点 A，与 y 轴交于点 C，与反比例函数
34、y=在第一象限内的图象交于点B（1，3），连接 BO，下面三个结论：SAOB=1.5，；点（x1，y1）和点（x2，y2）在反比例函数的图象上，若x1x2，则 y1y2；不等式 x+2的解集是 0 x1其中正确的有（）A0 个 B 1 个 C 2 个 D3 个20已知二次函数y=x2+2x+m2+2m1（m 为常数），当自变量 x 的值满足 1x3 时，与其对应的函数值y 的最小值为 5，则 m 的值为（）A1 或5 B1或 5 C 1 或3 D1 或 3二填空题（共4 小题）21如图，已知点 P（6，3），过点 P作 PMx轴于点 M，PNy 轴于点 N，反比例函数 y=的图象交 PM 于点
35、 A，交 PN于点 B 若四边形 OAPB的面积为 12，文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7
36、Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B
37、8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2
38、B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3
39、E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B
40、9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1
41、Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8精编学习资料欢迎下载则 k=22如图，已知二次函数y=x2+2x，当 1xa 时，y 随 x 的增大而增大，则实数 a 的取值范围是23如图，抛物线y=x2沿直线 y=x 向上平移个单位后，顶点在直线y=x
42、 上的M 处，则平移后抛物线的解析式为24如图所示，某拦水大坝的横断面为梯形ABCD，AE、DF为梯形的高，其中迎水坡 AB的坡角=45，坡长 AB=米，背水坡 CD的坡度 i=1：（i 为 DF与FC的比值），则背水坡 CD的坡长为米文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5
43、HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 Z
44、O6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编
45、码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X
46、5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3
47、 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文
48、档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8精编学习资料欢迎下载三解答题
49、（共5 小题）25如图，一次函数y=kx+b 与反比例函数 y=（x0）的图象交于 A（m，4），B（2，n）两点，与坐标轴分别交于M、N 两点（1）求一次函数的解析式；（2）根据图象直接写出kx+b0 中 x 的取值范围；（3）求 AOB的面积26如图，某电信部门计划修建一条连接B、C两地的电缆测量人员在山脚A点测得 B、C两地的仰角分别为30、45，在 B 地测得 C地的仰角为 60 已知 C地比 A 地高 200m，电缆 BC至少长多少米（精确到1m）？27在一个阳光明媚的上午，数学陈老师组织学生测量小山坡的一颗大树CD的高度，山坡 OM 与地面 ON 的夹角为 30（MON=30），站
50、立在水平地面上身高1.7 米的小明 AB在地面的影长 BP为 1.2 米，此刻大树 CD在斜坡的影长 DQ为 5米，求大树的高度文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 ZO6X7B9B8I8文档编码:CC1Q2B10A6X5 HV9B3E7Z4Y3 Z