满分5 >
初中数学试题 >
如图,梯形ABCD中,AB∥DC,AB⊥BC,AB=2cm,CD=4cm.以BC...
如图,梯形ABCD中,AB∥DC,AB⊥BC,AB=2cm,CD=4cm.以BC上一点O为圆心的圆经过A、D两点,且∠AOD=90°,则圆心O到弦AD的距离是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478008_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478008_ST/0.png)
cm
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478008_ST/1.png)
cm
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478008_ST/2.png)
cm
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478008_ST/3.png)
cm
考点分析:
相关试题推荐
如图,小正方形的边长均为1,则下列图中的三角形(阴影部分)与△ABC相似的是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478007_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478007_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478007_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478007_ST/images3.png)
D.
查看答案
函数y=ax+b和y=ax
2+bx+c在同一直角坐标系内的图象大致是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478006_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478006_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478006_ST/images2.png)
D.
查看答案
某种服装原价为200元,连续两次涨价a%后,售价为242元,则a的值为( )
A.5
B.10
C.15
D.21
查看答案
下列一组几何体是如图的俯视图的是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478004_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478004_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478004_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185931499947863/SYS201311011859314999478004_ST/images3.png)
D.
查看答案
为了了解某区九年级7000名学生的体重情况,从中抽查了500名学生的体重,就这个问题来说,下面说法正确的是( )
A.7000名学生是总体
B.每个学生是个体
C.样本容量为500
D.500名学生是所抽取的一个样本
查看答案