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寒潮、台风 和 水 旱 灾 害 PowerPoint PPT Presentation


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寒潮、台风 和 水 旱 灾 害. 台风. 寒潮. 水旱灾害. 读图思考: 1 、寒潮是一种什么样的天气现象? 2 、你能根据地图说出强冷空气的源地吗?它大致沿什么方向运动?为什么那里来的空气是干冷的? 3 、寒潮能影响到我国哪些地区?冷空气到达时,当地的天气将会有怎样的变化? 4 、我国有哪些地区不易受到寒潮的侵袭,为什么? 5 、为了保护农田,我们应当采取哪些防灾措施?. 寒潮是造成大范围的地区大幅度降温的强冷空气。 一般出现在每年秋末至次年初春之间。它来自西伯利亚、蒙古一带。 我国的西北地区东部、华北、东北地区的大部分、黄淮、江淮、江南等地区都受其影响。

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寒潮、台风 和 水 旱 灾 害

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