The gas produced from this chemical factory is poisnonous

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• The gas produced from this chemical factory is poisnonous
• 英语翻译POLLUTION-THE HAZARDOUS JOURNEY One particular issue in managing drainage nasims is controlling pollution.Pollution has many cases and may come from a single 'point' source(e.g.one factory),from an area(e.g.an industrial zone),or a whole region.The product may be a gas(e.g.carbon dioxide),a particulate(e.g.smoke),or dissolved in water (e.g.nitrates).These pollution products travel along pathways,including the atmosphere,streams or though the soil,
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• 反应TiCl4+2Mg===2MgCl2+Ti在Ar气氛中进行的理由是