满分5 >
初中数学试题 >
在比例尺是1:38 000的南京交通浏览图上,玄武隧道长约7cm,它的实际长度约...
在比例尺是1:38 000的南京交通浏览图上,玄武隧道长约7cm,它的实际长度约为( )
A.0.266km
B.2.66km
C.26.6km
D.266km
考点分析:
相关试题推荐
如图,两个位似图形△ABO和△A′B′O,若OA:OA′=3:1,则正确的是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001028411048775/SYS201311030010284110487011_ST/images0.png)
A.AB:A′B′=3:1
B.AA′:BB′=AB:AB′
C.OA:OB′=2:1
D.∠A=∠B′
查看答案
已知正五边形ABCDE与正五边形A′B′C′D′E′的面积比为1:2,则它们的相似比为( )
A.1:2
B.2:1
C.1:
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001028411048775/SYS201311030010284110487010_ST/0.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001028411048775/SYS201311030010284110487010_ST/1.png)
:1
查看答案
已知:如图,在△ABC中,∠ADE=∠C,则下列等式成立的是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001028411048775/SYS201311030010284110487009_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001028411048775/SYS201311030010284110487009_ST/0.png)
=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001028411048775/SYS201311030010284110487009_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001028411048775/SYS201311030010284110487009_ST/2.png)
=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001028411048775/SYS201311030010284110487009_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001028411048775/SYS201311030010284110487009_ST/4.png)
=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001028411048775/SYS201311030010284110487009_ST/5.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001028411048775/SYS201311030010284110487009_ST/6.png)
=
查看答案
如果mn=ab,则下列比列式中错误的是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001028411048775/SYS201311030010284110487008_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001028411048775/SYS201311030010284110487008_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103001028411048775/SYS201311030010284110487008_ST/2.png)
D.
查看答案
如图,若DE∥BC,FD∥AB,AD:AC=2:3,AB=9,BC=6,则四边形BEDF的周长为
.
查看答案