用科学记数法表示69000,应记作 .
考点分析:
相关试题推荐
小明的爸爸早晨出去散步,从家走了20分到达距离家800米的公园,他在公园休息了10分,然后用30分原路返回家中,那么小明的爸爸离家的距离S(单位:米)与离家的时间t(单位:分)之间的函数关系图象大致是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101194037490421641/SYS201311011940374904216009_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101194037490421641/SYS201311011940374904216009_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101194037490421641/SYS201311011940374904216009_ST/images2.png)
D.
查看答案
如图,在菱形ABCD中,∠ADC=120°,则BD:AC等于( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101194037490421641/SYS201311011940374904216008_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101194037490421641/SYS201311011940374904216008_ST/0.png)
:2
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101194037490421641/SYS201311011940374904216008_ST/1.png)
:3
C.1:2
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101194037490421641/SYS201311011940374904216008_ST/2.png)
:1
查看答案
某商场对商场中现有空调进行两次提价,提价后的价格为提价前的121%,则平均每次提价的百分数为( )
A.8%
B.10%
C.12%
D.20%
查看答案
如图所示为某一物体的主视图,请你判断它是下面( )组物体的主视图.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101194037490421641/SYS201311011940374904216006_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101194037490421641/SYS201311011940374904216006_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101194037490421641/SYS201311011940374904216006_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101194037490421641/SYS201311011940374904216006_ST/images3.png)
D.
查看答案
一个口袋中装有3个绿球,2个黄球,每个球除颜色外其它都相同,搅均后随机地从中摸出两个球都是绿球的概率是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101194037490421641/SYS201311011940374904216005_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101194037490421641/SYS201311011940374904216005_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101194037490421641/SYS201311011940374904216005_ST/2.png)
D.
查看答案