A.0.20mg/m3,0.10mg/m3 B.0.30mg/m3,0.15mg/m3 C.0.50mg/m3,0.25mg/m3 D.0.12mg/m3,0.05mg/m3
A.0.01% B.0.05% C.0.1% D.0.2%
A.每月1次 B.每月2次 C.每周1次 D.每周2次