A.960340.91 B.945000 C.935000 D.925000
A.32 B.38 C.40 D.42
A.4200 B.5880 C.4620 D.3780
A.20% B.50% C.33.33% D.30%
A.分批法 B.定额法 C.品种法 D.分类法