设复数z是方程x
2+2x+2=0的根,若复数z与复数ω在复平面对应点都在第二象限,其中复数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183410532547130/SYS201310241834105325471018_ST/0.png)
,求实数a的取值范围.
考点分析:
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探索以下规律:
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183410532547130/SYS201310241834105325471017_ST/images0.png)
则根据规律,从2003到2005,箭头的方向依次是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183410532547130/SYS201310241834105325471017_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183410532547130/SYS201310241834105325471017_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183410532547130/SYS201310241834105325471017_ST/images3.png)
D.
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183410532547130/SYS201310241834105325471016_ST/images0.png)
如果执行下面的程序框图,那么输出的s是( )
A.2550
B.-2550
C.2548
D.-2552
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(文科)下列几何体中,三个视图(主视图,侧视图,俯视图)中有且仅有两个相同,另一个不同的几何体有_________个( )
(1)正方体 (2)圆柱 (3)圆锥 (4)正四棱柱 (5)球体.
A.1个
B.2个
C.3个
D.4个
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(理科)已知a≠b,且ab≠0,则方程ax-y+b=0和bx
2+ay
2=ab所对应图象大致为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183410532547130/SYS201310241834105325471014_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183410532547130/SYS201310241834105325471014_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183410532547130/SYS201310241834105325471014_ST/images2.png)
D.
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空间四个点中,有三个点共线是这四个点共面的( )
A.充分非必要条件
B.必要非充分条件
C.充要条件
D.既非充分又非必要条件
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