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用数字0,1,2,3,4,5,6组成没有重复数字的四位数,其中个位、十位和百位上...
用数字0,1,2,3,4,5,6组成没有重复数字的四位数,其中个位、十位和百位上的数字之和为偶数的四位数共有 个(用数字作答)
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在四边形ABCD中,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101136650116704/SYS201311031011366501167014_ST/0.png)
=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101136650116704/SYS201311031011366501167014_ST/1.png)
=(1,1),
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,则四边形ABCD的面积是
.
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(x+1)
3+(x-2)
8=a
+a
1(x-1)
2+a
2(x-1)
2+…+a
8(x-1)
8,则a
6=
.
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有一个几何体的三视图及其尺寸(单位cm),则该几何体的表面积为:
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设抛物线y
2=2x的焦点为F,过点M(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101136650116704/SYS201311031011366501167011_ST/0.png)
,0)的直线与抛物线相交于A、B两点,与抛物线的准线相交于点C,|BF|=2,则△BCF与△ACF的面积之比
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=( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101136650116704/SYS201311031011366501167011_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101136650116704/SYS201311031011366501167011_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101136650116704/SYS201311031011366501167011_ST/4.png)
D.
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已知球的直径SC=4,A,B是该球球面上的两点,AB=
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,∠ASC=∠BSC=30°,则棱锥S-ABC的体积为( )
A.3
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101136650116704/SYS201311031011366501167010_ST/1.png)
B.2
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101136650116704/SYS201311031011366501167010_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101136650116704/SYS201311031011366501167010_ST/3.png)
D.1
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