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某几何体的三视图如图所示,该几何体的体积是( ) A.8 B. C.4 D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334007_ST/images0.png)
某几何体的三视图如图所示,该几何体的体积是( )
A.8
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334007_ST/0.png)
C.4
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334007_ST/1.png)
考点分析:
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直线ax+by+a+b=0与圆x
2+y
2=2的位置关系为( )
A.相交
B.相切
C.相离
D.相交或相切
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在△ABC中,M是BC的中点,AM=1,点P在AM上且满足学
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,则
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等于( )
A.
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B.
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C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334005_ST/4.png)
D.
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若A为不等式组
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表示的平面区域,则a从-2连续变化到1时,动直线x+y=a扫过A中的那部分区域的面积为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334004_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334004_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334004_ST/3.png)
D.
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向量a=(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334003_ST/0.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334003_ST/1.png)
sinx ),b=(cos2x,cosx),f(x)=a•b,为了得到函数y=f(x)的图象,可将函数y=sin2x的图象( )
A.向右平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334003_ST/2.png)
个单位长度
B.向右平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334003_ST/3.png)
个单位长度
C.向左平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334003_ST/4.png)
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D.向左平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334003_ST/5.png)
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已知命题p:∃x∈R,使
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102747346433415/SYS201311031027473464334002_ST/0.png)
;命题q:∀x∈R,都有x
2+x+1>0.给出下列结论:
①命题“p∧q”是真命题;
②命题“p∧¬q”是假命题;
③命题“¬p∨q”是真命题;
④命题“¬p∨¬q”是假命题.
其中正确的是( )
A.②③
B.②④
C.③④
D.①②③
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