A.0.01 B.0.05 C.0.1 D.0.5
A.C9芳烴、苯、二甲苯 B.C9芳烴、甲苯、混合二甲苯 C.C9芳烴、苯、甲苯 D.苯、甲苯、混合二甲苯
A.1/2 B.1/3 C.1/4 D.1/5