自然灾害安全知识教育 主题班会:警惕灾害·学会自救·确保平安 课件(25张PPT).pptx
警惕灾害·学会自救·确保平安
May I be strenuous, energetic and persevering ! May I be patient! May I be able to bear and
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关于洪灾基本知识
Basic knowledge of flood disaster
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防洪防雷的小知识
Basic knowledge of flood disaster
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洪水前后注意事项
Basic knowledge of flood disaster
May I be strenuous, energetic and perseverin...