满分5 >
高中数学试题 >
已知三棱柱ABC-A1B1C1的6个顶点都在球O的球面上,若AB=3,AC=4,...
已知三棱柱ABC-A
1B
1C
1的6个顶点都在球O的球面上,若AB=3,AC=4,AB⊥AC,AA
1=12,则球O的半径为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204009_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204009_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204009_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204009_ST/3.png)
考点分析:
相关试题推荐
已知点O(0,0),A(0,b),B(a,a
3),若△OAB为直角三角形,则必有( )
A.b=a
3B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204008_ST/0.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204008_ST/1.png)
D.
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204007_ST/images0.png)
执行如图所示的程序框图,若输入n=10,则输出的S=( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204007_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204007_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204007_ST/2.png)
D.
查看答案
使得
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204006_ST/0.png)
(n∈N
+)的展开式中含有常数项的最小的n为( )
A.4
B.5
C.6
D.7
查看答案
在△ABC,内角A,B,C所对的边长分别为a,b,c.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204005_ST/0.png)
,且a>b,则∠B=( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204005_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204005_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204005_ST/3.png)
D.
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124315745720461/SYS201310251243157457204004_ST/images0.png)
某学校组织学生参加英语测试,成绩的频率分布直方图如图,数据的分组一次为[20,40),[40,60),[60,80),8[20,100).若低于60分的人数是15人,则该班的学生人数是( )
A.45
B.50
C.55
D.60
查看答案