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d.innerHTML = d.innerHTML + '<a class=\"download_word download_word_lb\" href=\"javascript:;\" id=\"vipdown\" onclick=\"showpay(1)\"><em></em>下载文档(未登录)化学硬水与软水知识点描述：做好实验是学好化学的基础.不仅课堂做,课后还要多做,可以用vcm仿真实验,一种专门做实验的软件.每次实验牢记实验装置的要点,按照操作步骤,细致认真地操作.其次要学会观察实验。下面是小编整理的化学硬水与软水知识点，仅供参考希望能够帮助到大家。</a>';
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