化简:
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131102235924434568546/SYS201311022359244345685007_ST/0.png)
(y>0)=
.
考点分析:
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已知:a=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131102235924434568546/SYS201311022359244345685006_ST/0.png)
,b=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131102235924434568546/SYS201311022359244345685006_ST/1.png)
,则
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131102235924434568546/SYS201311022359244345685006_ST/2.png)
的值是( )
A.大于1
B.小于1
C.等于1
D.无法确定
查看答案
把
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131102235924434568546/SYS201311022359244345685005_ST/0.png)
化简的结果是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131102235924434568546/SYS201311022359244345685005_ST/1.png)
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131102235924434568546/SYS201311022359244345685005_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131102235924434568546/SYS201311022359244345685005_ST/3.png)
C.2
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131102235924434568546/SYS201311022359244345685005_ST/4.png)
D.3
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131102235924434568546/SYS201311022359244345685004_ST/0.png)
(x<0,y>0,z>0)化简的结果是( )
A.x
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131102235924434568546/SYS201311022359244345685004_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131102235924434568546/SYS201311022359244345685004_ST/2.png)
C.-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131102235924434568546/SYS201311022359244345685004_ST/3.png)
D.
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131102235924434568546/SYS201311022359244345685002_ST/0.png)
成立的条件是( )
A.a≥0,b>0
B.a≤0,b<0
C.a≥0,b≥0
D.a≤0,b≤0
查看答案
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