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d.innerHTML = d.innerHTML + '<a class=\"download_word download_word_lb\" href=\"javascript:;\" id=\"vipdown\" onclick=\"showpay(2)\"><div class=\"download_card\"><div class=\"card_nr card_nr_lb\"><h4 class=\"card_bt\">实际问题与一元二次方程教案</h4><div class=\"download_card_msg\">产1吨乙种药品的成本是6000元,随着生产技术的进步,现在生产 1吨甲种药品的成本是3000元,生产1吨乙种药品的成本是3600元,哪种药品成本的年平均下降率较大?     分析:甲种药品成本的年平均下降额为              (5000-3000)÷2=1000(元)    乙种药品成本的年平均下降额为              (6000-3600)÷2=1200(元)    乙种药品成本的年平均下降额较大.但是,年平均下降额(元)不等同于年平均下降率    解:设甲种药品成本的年平均下降率为。下面小编给大家分享实际问题与一元二次方程教案，希望能帮助到大家。 实际问题与一元二次方程教案文档下载网址链接：</div></div><div class=\"download_card_btn download_card_btn_lb\"><div class=\"content_box_tj\"><span>推荐度：</span><img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\"></div><div class=\"downlod_btn_right demo_tc downlod_btn_right_lb\"><em class=\"downlod_icon\"></em>点击下载文档<span>文档为doc格式</span></div> </div></div></a>';
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