满分5 >
高中数学试题 >
已知三棱锥S-ABC的所有顶点都在球O的球面上,△ABC是边长为1的正三角形,S...
已知三棱锥S-ABC的所有顶点都在球O的球面上,△ABC是边长为1的正三角形,SC为球O的直径,且SC=2,则此棱锥的体积为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102032277419616/SYS201311031020322774196007_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102032277419616/SYS201311031020322774196007_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102032277419616/SYS201311031020322774196007_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102032277419616/SYS201311031020322774196007_ST/3.png)
考点分析:
相关试题推荐
等比数列{a
n}的前n项和为S
n,若S
2n=3(a
1+a
3+…+a
2n-1),a
1a
2a
3=8,则a
10等于( )
A.-512
B.1024
C.-1024
D.512
查看答案
已知某个几何体的三视图如图所示,根据图中标出的尺寸,可得这个几何体的体积是( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102032277419616/SYS201311031020322774196005_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102032277419616/SYS201311031020322774196005_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102032277419616/SYS201311031020322774196005_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102032277419616/SYS201311031020322774196005_ST/2.png)
D.
查看答案
圆:x
2+y
2-2x-2y+1=0上的点到直线x-y=2的距离最大值是( )
A.2
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102032277419616/SYS201311031020322774196004_ST/0.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102032277419616/SYS201311031020322774196004_ST/1.png)
D.
查看答案
已知椭圆
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102032277419616/SYS201311031020322774196003_ST/0.png)
,则( )
A.C
1与C
2顶点相同
B.C
1与C
2长轴长相同
C.C
1与C
2短轴长相同
D.C
1与C
2焦距相等
查看答案
已知等差数列{a
n}中a
2=2,则其前3项的积T
3的取值范围是( )
A.(-∞,4]
B.(-∞,8]
C.[4,+∞)
D.[8,+∞)
查看答案