A.≤0.05%B.≤0.10%C.≤0.15%D.≤0.20%E.≤0.25%
A.1kV/mB.2kV/mC.3kV/mD.4kV/mE.5kV/m
A.0.1mg/LB.0.3mg/LC.0.5mg/LD.0.7mg/LE.0.9mg/L