2017年北京市西城区初三一模试卷及答案数学.pdf

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1、1 北京市西城区2017 年九年级统一测试一、选择题此题共30 分，每题3 分下面各题均有四个选项，其中只有一个是符合题意的 1春节假期，北京市推出了庙会休闲娱乐、传统文化展演、游园赏景赏花、冰雪项目体验等精品文化活动，共接待旅游总人数9 608 000 人次，将9 608 000 用科学记数法表示为A39608 10B4960.8 10C596.08 10D69.608 102在数轴上，实数a，b 对应的点的位置如下图，且这两个点关于原点对称，以下结论中，正确的选项是0ab1A0abB0abCabD0ab3如图，ABCD，DACE 于点 A假设 EAB=55，则 D 的度数为A25B35C4

2、5D55DCABE第 3 题图第 4 题图4右图是某几何体的三视图，该几何体是A三棱柱B长方体C圆锥D圆柱5假设正多边形的一个外角是40，则这个正多边形是A正七边形B正八边形C正九边形D正十边形6用配方法解一元二次方程2650 xx，此方程可化为A234xB2314xC294xD2914x2 7如图，小明在地面上放了一个平面镜，选择合适的位置，刚好在平面镜中看到旗杆的顶部，此时小明与平面镜的水平距离为2m，旗杆底部与平面镜的水平距离为16m假设小明的眼睛与地面距离为m，则旗杆的高度为单位：mA163B9 C12 D6438某商店举行促销活动，其促销的方式是“消费超过 100 元时，所购买的商品

3、按原价打8 折后，再减少20元”假设某商品的原价为x 元 x100，则购买该商品实际付款的金额单位：元是A80%20 x B80%20 x C20%20 xD20%20 x9某校合唱团有30 名成员，下表是合唱团成员的年龄分布统计表：年龄单位：岁13 14 15 16 频数单位：名5 15 x 10-x对于不同的x，以下关于年龄的统计量不会发生改变的是A平均数、中位数B平均数、方差C众数、中位数D众数、方差10汽车的“燃油效率”是指汽车每消耗1 升汽油行驶的里程数“燃油效率”越高表示汽车每消耗1 升汽油行驶的里程数越多；“燃油效率”越低表示汽车每消耗1 升汽油行驶的里程数越少右以下图描述了甲、

4、乙、丙三辆汽车在不同速度下的燃油效率情况，以下说法中，正确的选项是A以相同速度行驶相同路程，三辆车中，甲车消耗汽油最多B以低于 80km/h 的速度行驶时，行驶相同路程，三辆车中，乙车消耗汽油最少文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4

5、 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M

6、4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5

7、M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I

8、5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4

9、I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T

10、4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10

11、T4I5M4 ZE7E8D9N10F7文档编码:CJ3X2D2T10W8 HR8Z10T4I5M4 ZE7E8D9N10F73 C以高于 80km/h 的速度行驶时，行驶相同路程，丙车比乙车省油D以 80km/h 的速度行驶时，行驶100 公里，甲车消耗的汽油量约为10 升二、填空题此题共18 分，每题3 分11分解因式：ax22ax+a=_12假设函数的图像经过点A 1，2，点 B2，1，写出一个符合条件的函数表达式_13下表记录了一名球员在罚球线上罚篮的结果：投篮次数n100 150 300 500 800 1000 投中次数 m58 96 174 302 484 601 投中频率mn05

12、80 0640 0580 0604 0605 0601 这名球员投篮一次，投中的概率约是4 如图，四边形 ABCD 是O 内接四边形，假设 BAC=30，CBD=80，则 BCD 的度数为 _第 14 题图第 15 题15在平面直角坐标系xOy 中，以原点O 为旋转中心，将AOB 顺时针旋转90 得到 AOB，其中点 A与点 A 对应，点 B与点 B 对应 假设点A 3，0，B 1，2，则点 A的坐标为 _，点 B的坐标为 _.文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档

13、编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2

14、Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U

15、7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8

16、文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8

17、Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N

18、8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5

19、T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T84 16下面是“经过已知直线外一点作这条直线的平行线”的尺规作图过程已知：如图1，直线 l 和直线 l 外一点 P求作：直线l 的平行直线，使它经过点P作法：如图2（1）过点 P 作直线 m 与直线 l 交于点 O;（2）在直线 m 上取一点AOAOP，以点 O 为圆心，OA 长为半径画弧，与直线l 交于点 B；（3）以点 P 为圆心，OA 长为半径画弧，交直线m 于点 C，以点 C 为圆心，AB 长为半径画弧，两弧交于点D；（

20、4）作直线 PD所以直线PD 就是所求作的平行线请答复：该作图的依据是三、解答题此题共72 分，第 17-26 题，每题5 分，第 27 题 7 分，第 28 题 7 分，第 29 题 8 分解答应写出文字说明、演算步骤或证明过程.17计算：10O123260+322sin文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T

21、8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X

22、8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1

23、N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z

24、5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R

25、9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4

26、N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P

27、5Z5T85 18解不等式组：523+4722xxxx19已知 x=2y，求代数式222112xxyyyxx y的值.20 如图，在 ABC 中，BC 的垂直平分线交BC 于点 D，交 AB 延长线于点E，连接 CE.求证：BCE=A+ACB.EDABC文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10

28、R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M

29、4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1

30、P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB

31、10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP

32、3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3

33、J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T86 21某

34、科研小组计划对某一品种的西瓜采用两种种植技术种植.在选择种植技术时，该科研小组主要关心的问题是：西瓜的产量和产量的稳定性，以及西瓜的优等品率.为了解这两种种植技术种出的西瓜的质量情况，科研小组在两块自然条件相同的试验田进行比照试验，并从这两块实验田中各随机抽取20 个西瓜，分别称重后，将称重的结果记录如下：表 1 甲种种植技术种出的西瓜质量统计表编号1 2 3 4 5 6 7 8 9 10 西瓜质量.单位：kg5.0 编号11 12 13 14 15 16 17 18 19 20 西瓜质量.单位：kg表 2 乙种种植技术种出的西瓜质量统计表编号1 2 3 4 5 6 7 8 9 10 西瓜质量

35、.单位：kg4.9 4.1 5.1 4.9 编号11 12 13 14 15 16 17 18 19 20 西瓜质量.单位：kg5.4 5.0 5.3 答复以下问题：1假设将质量为4.55.5单位：kg的西瓜记为优等品，完成下表：优等品西瓜个数平均数方差甲种种植技术种出的西瓜质量乙种种植技术种出的西瓜质量15 2根据以上数据，你认为该科研小组应选择哪种种植技术，并请说明理由.文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7

36、 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文

37、档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y

38、2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8

39、U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T

40、8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X

41、8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1

42、N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T87 22 在平面直角坐标系xOy，直线 y=x-1 与 y 轴交于点A，与双曲线=kyx交于点 B m，2.1求点 B 的坐标及k 的值;2将直线AB 平移，使它与x 轴交于点C，与 y 轴交于点D，假设 ABC 的面积为6，求直线CD 的表达式.23如图，在ABCD 中，对角线BD 平分 ABC，过点 A 作 AE/BD，交 CD 的延长线于点E，过点 E 作EFBC，交 BC 延长线于点F.1求证：四边形ABCD 是菱形；2假设 ABC=45，BC=2，求 EF 的长.DFEB

43、AC24.汽车保有量是指一个地区拥有车辆的数量，一般是指在当地登记的车辆进入21 世纪以来，我国汽车文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码

44、:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5

45、 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7

46、ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档

47、编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2

48、Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U

49、7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T88 保有量逐年增长以下图是根据中国产业信息网上的有关数据整理的统计图20072015 年全国汽车保有量及增速统计图根据以上信息，答复以下问题：1 2016 年汽车保

50、有量净增2200 万辆，为历史最高水平，2016 年汽车的保有量为万辆，与 2015年相比，2016 年的增长率约为%；2从 2008 年到 2015 年，年全国汽车保有量增速最快；3预估 2020 年我国汽车保有量将到达万辆，预估理由是25如图，AB 为O 的直径，C 为O 上一点，过点C 作O 的切线，交BA 的延长线交于点D，过点 B文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:CB10R9X8Y2Z5 HP3M4N1N8U7 ZK3J1P5Z5T8文档编码:C