A.300g/m2 B.150g/m2 C.225g/m2 D.75g/m2
A.5.5mg/L,4mg/L B.4mg/L,5.5mg/L C.1.5mg/L,4mg/L D.1.5mg/L,5.5mg/L
A.LB-IB B.DB-IB C.IB-DB D.LB-DB