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第一个问题:关于大气卫生标准的国内外概况综述随着工农业的飞跃发展,环境污染问题受到世界各国的广泛重视。人们为控制、保护和改善人类环境,必须制定出大气、水、土壤中所含污染物质的卫生标准。通常环境卫生标准是通过专门的科学实验和现场流行病学调查,近年来又出现通过短期动物实验、用
The first question: Overview of the domestic and international profiles on atmospheric health standards With the rapid development of industry and agriculture, the issue of environmental pollution has drawn the attention of all countries in the world. In order to control, protect and improve the human environment, people must set health standards for pollutants contained in the atmosphere, water and soil. Environmental sanitation standards are usually through specialized scientific experiments and field epidemiological investigations, in recent years emerged through short-term animal experiments, with