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htxt=htxt+"<tr><td height=\"25\">『资料评论』&nbsp;&nbsp;<a href=\"/file_review.asp?id=30307261\" target=\"_blank\"><font color=blue>点击这里发表或查看更多评论</font></a> </td><td align=\"right\"><a href='javascript:void(0)' onclick='sendhp()'><img src='/images/hp.png'  width='16' height='16' border='0' align='absmiddle'></a>好评率：<span id='hpp'>100.00%</span> <a href='javascript:void(0)' onclick='sendcp()'><img src='/images/cp.png' width='20' height='17' border='0' align='absmiddle'></a>差评率：<span id='cpp'>-</span></td></tr>"
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htxt=htxt+"<td width=\"80%\" class=\"txt\">&nbsp;□ <font color=red><b>[好评]</b></font>1．元素周期表（1）1869年，俄国化学家 按照 由 到 依次排列，并将 的元素放在一个纵行，制出了第一章元素周期表。（2）原子序数是指按照元素在 的顺序给元素编号。原子序数与原子结构的关系：原子序数= = = 。（3）元素周期表的编排原则：①把 相同元素，按照 递增的顺序从左到右排成横行；②把 相同元素，按照 递增的顺序由上而下排成纵行。（4）元素周期表的结构：①周期 个横行</td>";
htxt=htxt+"<td width=\"20%\" align=\"right\" valign=\"top\" >398893553 <6-6 16:11></td>";
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htxt=htxt+"<td width=\"80%\" class=\"txt\">&nbsp;□ <font color=red><b>[好评]</b></font>参考</td>";
htxt=htxt+"<td width=\"20%\" align=\"right\" valign=\"top\" >spf1234 <8-3 16:43></td>";
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htxt=htxt+"<td width=\"80%\" class=\"txt\">&nbsp;□ 多谢分享！</td>";
htxt=htxt+"<td width=\"20%\" align=\"right\" valign=\"top\" >hfppzxcc <6-11 11:4></td>";
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htxt=htxt+"<td width=\"80%\" class=\"txt\">&nbsp;□ 资料好，有值得学习的地方</td>";
htxt=htxt+"<td width=\"20%\" align=\"right\" valign=\"top\" >bcy1975 <6-23 19:54></td>";
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