满分5 >
初中数学试题 >
如图,反比例函数y=-(x>0)图象经过矩形OABC边AB的中点E,交边BC于F...
如图,反比例函数y=-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018006_ST/0.png)
(x>0)图象经过矩形OABC边AB的中点E,交边BC于F点,连接EF、OE、OF,则△OEF的面积是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018006_ST/images1.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018006_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018006_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018006_ST/3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018006_ST/4.png)
考点分析:
相关试题推荐
如图,在正方体的表面展开图中,要将-a、-b、-c填入剩下的三个空白处,(彼此不同),则正方体三组相对的两个面中数字和均为零的概率为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018005_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018005_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018005_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018005_ST/2.png)
D.
查看答案
如图,正方形ABCD中,E是BC边上一点,以E为圆心、EC为半径的半圆与以A为圆心,AB为半径的圆弧外切,则sin∠EAB的值为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018004_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018004_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018004_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018004_ST/2.png)
D.
查看答案
在四边形ABCD中,对角线AC与BD相交于点E,若AC平分∠DAB,AB=AE,AC=AD.那么在下列四个结论中:(1)AC⊥BD;(2)BC=DE;(3)∠DBC=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018003_ST/0.png)
∠DAB;(4)△ABE是正三角形,其中正确的是( )
A.(1)和(2)
B.(2)和(3)
C.(3)和(4)
D.(1)和(4)
查看答案
如图所示的两个圆盘中,指针落在每一个数上的机会均等,那么两个指针同时落在偶数上的概率是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018002_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018002_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018002_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230101886/SYS201310221640102301018002_ST/2.png)
D.
查看答案
已知⊙O
1半径为3cm,⊙O
2的半径为7cm,若⊙O
1和⊙O
2的公共点不超过1个,则两圆的圆心距不可能为( )
A.0cm
B.4cm
C.8cm
D.12cm
查看答案