A.5mg/kgB.10mg/kgC.15mg/kgD.20mg/kg
A.总量的0.2%B.总量的0.4%C.总量的0.6%D.总量的0.8%
A.4.0-8.0B.4.0-10.0C.6.0-10.0D.8.0-12.0