设
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001104128836146/SYS201311030011041288361009_ST/0.png)
的整数部分为a,小数部分为b,则
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001104128836146/SYS201311030011041288361009_ST/1.png)
的值等于
.
考点分析:
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已知⊙O
1的半径为3cm,⊙O
2的半径为4cm,两圆的圆心距O
1O
2为7cm,则⊙O
1与⊙O
2的位置关系是
.
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函数y=ax+b和y=ax
2+bx+c(a≠0)在同一个坐标系中的图象可能为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001104128836146/SYS201311030011041288361006_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001104128836146/SYS201311030011041288361006_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001104128836146/SYS201311030011041288361006_ST/images2.png)
D.
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如图,在4×4的正方形网格中,△MNP绕某点旋转一定的角度,得到△M
1N
1P
1.则其旋转中心一定是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001104128836146/SYS201311030011041288361005_ST/images0.png)
A.点E
B.点F
C.点G
D.点H
查看答案
如图,等腰梯形ABCD中,AD∥BC,以A为圆心,AD为半径的圆与BC切于点M,与AB交于点E,若AD=2,BC=6,则
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001104128836146/SYS201311030011041288361004_ST/0.png)
长为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001104128836146/SYS201311030011041288361004_ST/images1.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001104128836146/SYS201311030011041288361004_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001104128836146/SYS201311030011041288361004_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001104128836146/SYS201311030011041288361004_ST/3.png)
D.3π
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