若0<x,那么
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231215605956622/SYS201311012312156059566003_ST/0.png)
的最大值是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231215605956622/SYS201311012312156059566003_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231215605956622/SYS201311012312156059566003_ST/2.png)
C.1
D.2
考点分析:
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