求有笔的高一化学大神帮我看下这题,速给采纳!19题
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![求有笔的高一化学大神帮我看下这题,速给采纳!19题](/uploads/image/z/3400530-42-0.jpg?t=%E6%B1%82%E6%9C%89%E7%AC%94%E7%9A%84%E9%AB%98%E4%B8%80%E5%8C%96%E5%AD%A6%E5%A4%A7%E7%A5%9E%E5%B8%AE%E6%88%91%E7%9C%8B%E4%B8%8B%E8%BF%99%E9%A2%98%2C%E9%80%9F%E7%BB%99%E9%87%87%E7%BA%B3%2119%E9%A2%98)
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