單項選擇題《職業(yè)性慢性鉛中毒診斷標(biāo)準(zhǔn)》(GBZ37-2002)中,診斷輕度鉛中毒的血鉛或尿鉛是()。

A.血鉛≥1.9μmol/L(0.4mg/L)或尿鉛≥0.34μmol/L(0.07mg/L)
B.血鉛≥2.9μmol/L(0.6mg/L)或尿鉛≥0.58μmol/L(0.12mg/L)
C.血鉛≥2.4μmol/L(0.5mg/L)或尿鉛≥0.41μmol/L(0.09mg/L)
D.血鉛≥1.4μmol/L(0.3mg/L)或尿鉛≥0.27μmol/L(0.05mg/L)


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