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有毒作业分级是衡量职业劳动条件好坏的一种手段，它提供了作业岗位空气中毒物对作业工人的危害程度，为作业工人的劳动防护及职业健康监护提供了必要的科学依据。本文对广州市３０８间工厂的１２４６个接毒作业岗位分别用ＧＢ１２３３１－９０标准中的分级级别表和简化级别表?
Classification of toxic jobs is a measure of the quality of occupational working conditions, which provides the workplace toxic air poisoning of workers to the extent of workers’ labor protection and occupational health monitoring provides the necessary scientific basis. In this paper, 308 factories in Guangzhou City, 1246 poisoning jobs were used GB12331-90 standard classification level table and simplified level table?