单项选择题
A.1g;2g B.1g;2.5g C.1.5g;2.0g D.1.5g;2.5g
A.20mg/kg~3500mg/kg;20mg/kg B.20mg/kg~2500mg/kg;20mg/kg C.5mg/kg~3500mg/kg;5mg/kg D.5mg/kg~2500mg/kg;5mg/kg
A.0.1 B.0.2 C.0.3 D.0.4