A.80% B.90% C.85% D.95%
A.严重危险级、中危险级 B.重危险级、轻危险级、安全级 C.严重危险级、中危险级、轻危险级 D.仓库危险级、严重危险级、中危险级、轻危险级
A.1 B.2 C.4 D.5
A.0.03 B.0.05 C.0.08 D.0.1