在制定正常成人肺活量95%参考值范围时,宜采用界值为

A、[img=~/QImg/2013-10-14-10-46-38/image048.jpg]
B、[img=~/QImg/2013-10-14-10-46-38/image049.jpg]
C、[img=~/QImg/2013-10-14-10-46-38/image050.jpg]
D、>P[img=~/QImg/2013-10-14-10-46-38/image027.jpg]