单项选择题
A.32.0 B.30.0 C.28.0 D.26.0
A.Asv1=410@100,Asv2=410@200 B.Asv1=Asv2=410@100 C.Asv1=412 @100,Asv2=412@200 D.Asv1=Asv2=412@100