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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\">低频电流的作用</h4><div class=\"download_card_msg\">&ensp;&ensp;&ensp;&ensp;一、低频电流的作用 
&ensp;&ensp;&ensp;&ensp;通过大量触电事故案例分析表明：当电流通过人体内部时，对人体伤害的严重程度与通过人体电流的大小、通过人体的持续时间、电流通过。下面小编给大家分享低频电流的作用，希望能帮助到大家。 低频电流的作用文档下载网址链接：</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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