A.蒸餾水B.75%酒精C.12D.C14
A.核查儀器設(shè)備B.核查方法C.作為質(zhì)控物質(zhì)D.結(jié)果賦值
A.陰性B.大于2.5mg/kgC.小于2.5mg/kgD.2.5mg/kg