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设向,t是实数,|-t|的最小值为( ) A. B. C.1 D.
设向
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214022087664759/SYS201310232140220876647007_ST/0.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214022087664759/SYS201310232140220876647007_ST/1.png)
t是实数,|
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214022087664759/SYS201310232140220876647007_ST/2.png)
-t
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214022087664759/SYS201310232140220876647007_ST/3.png)
|的最小值为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214022087664759/SYS201310232140220876647007_ST/4.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214022087664759/SYS201310232140220876647007_ST/5.png)
C.1
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023214022087664759/SYS201310232140220876647007_ST/6.png)
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