满分5 >
高中数学试题 >
为了从甲乙两人中选一人参加数学竞赛,老师将二人最近6次数学测试的分数进行统计,甲...
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230934960046598/SYS201311012309349600465005_ST/images0.png)
为了从甲乙两人中选一人参加数学竞赛,老师将二人最近6次数学测试的分数进行统计,甲乙两人的平均成绩分别是
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230934960046598/SYS201311012309349600465005_ST/0.png)
、
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230934960046598/SYS201311012309349600465005_ST/1.png)
,则下列说法正确的是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230934960046598/SYS201311012309349600465005_ST/2.png)
>
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230934960046598/SYS201311012309349600465005_ST/3.png)
,乙比甲成绩稳定,应选乙参加比赛
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230934960046598/SYS201311012309349600465005_ST/4.png)
>
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230934960046598/SYS201311012309349600465005_ST/5.png)
,甲比乙成绩稳定,应选甲参加比赛
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230934960046598/SYS201311012309349600465005_ST/6.png)
<
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230934960046598/SYS201311012309349600465005_ST/7.png)
,甲比乙成绩稳定,应选甲参加比赛
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230934960046598/SYS201311012309349600465005_ST/8.png)
<
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230934960046598/SYS201311012309349600465005_ST/9.png)
,乙比甲成绩稳定,应选乙参加比赛
考点分析:
相关试题推荐
读两段程序:
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230934960046598/SYS201311012309349600465004_ST/images0.png)
对甲、乙程序和输出结果判断正确的是( )
A.程序不同,结果不同
B.程序不同,结果相同
C.程序相同,结果不同
D.程序相同,结果相同
查看答案
将51化为二进制数得( )
A.100111
B.110110
C.110011
D.110101
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230934960046598/SYS201311012309349600465002_ST/images0.png)
某程序框图如图所示,该程序运行后输出的k的值是( )
A.4
B.5
C.6
D.7
查看答案
某程序框图如图所示,若输出的S=57,则判断框内为( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230934960046598/SYS201311012309349600465001_ST/images0.png)
A.k>4?
B.k>5?
C.k>6?
D.k>7?
查看答案
以两点A(-3,-1)和B(5,5)为直径端点的圆的方程是( )
A.(x-1)
2+(y+2)
2=100
B.(x-1)
2+(y-2)
2=100
C.(x-1)
2+(y-2)
2=25
D.(x+1)
2+(y+2)
2=25
查看答案