若检验水准定为0.05,欲比较不同三种药物对大鼠尿中氨基氮排出量的影响,界值应为

A、t[img=~/QImg/2013-10-14-11-38-02/image008.gif]
B、F[img=~/QImg/2013-10-14-11-38-02/image009.gif]
C、F[img=~/QImg/2013-10-14-11-38-02/image010.gif]
D、F[img=~/QImg/2013-10-14-11-38-02/image011.gif]
E、F[img=~/QImg/2013-10-14-11-38-02/image012.gif]