42中講稿ppt-南京曉莊學院-資料下載頁
2025-02-14 00:14本頁面
【正文】 二氧化硫已經(jīng)除盡 Is SO2 useful to us or not ? Uses of SO2 ? Bleach paper pulp, wool, silk, and straw products ? Kill the mold and bacteria 紙漿 草制品 霉菌 細菌 But ! The polluted cities The formation of international acid rain 酸 雨 形 成 The statue eroded by acid rain 雕像 被腐蝕的 The trees are being destroyed by acid rain 被破壞的 Let’s share the information and ideas！ The harmful effects on people’s health 影響 The sky should have been blue! What shall we do ? CHINA , 1998 Main resources: factories Resources of SO2 來源 Do you want to know how much SO2 is in the air around you? Use your head Design an experiment to measure the concentration of SO2 in the air around you.. 設計 測量 濃度 Compare with the following table, does the concentration of SO2 in the air around you excess （ ） the limitation? If it is , what can you do? time 10 standard 20 standard 30 standard Per year day Per day once Limitation of SO2 in the air/mgm3 比較 超過 限度 Thanks for your ing ! Email: 演講完畢，謝謝觀看！
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