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htxt=htxt+"<tr><td height=\"25\">『资料评论』&nbsp;&nbsp;<a href=\"/file_review.asp?id=30381535\" 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;□ 好评</td>";
htxt=htxt+"<td width=\"20%\" align=\"right\" valign=\"top\" >qiulin6958 <8-2 14:37></td>";
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htxt=htxt+"<td width=\"80%\" class=\"txt\">&nbsp;□ 已下。</td>";
htxt=htxt+"<td width=\"20%\" align=\"right\" valign=\"top\" >luofujun <6-18 11:16></td>";
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htxt=htxt+"<table width=\"100%\" border=\"0\" cellpadding=\"0\" cellspacing=\"2\">";
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htxt=htxt+"<td width=\"80%\" class=\"txt\">&nbsp;□ <font color=red><b>[好评]</b></font>非常实用，帮助我们教师做了一个详细的分析</td>";
htxt=htxt+"<td width=\"20%\" align=\"right\" valign=\"top\" >sy520lmh <6-15 19:33></td>";
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htxt=htxt+"<table width=\"100%\" border=\"0\" cellpadding=\"0\" cellspacing=\"2\" bgcolor=\"#EFF2F4\">";
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htxt=htxt+"<td width=\"80%\" class=\"txt\">&nbsp;□ <font color=red><b>[好评]</b></font>第三代半导体材料氮化镓GaN通常称为高温半导体材料。回答下列问题：（1）基态Ga原子价层电子的轨道表达式为_________________________，第一电离能介于N和B之间的第二周期元素有_______种。（2）HCN分子中σ键与π键的数目之比为_______，其中σ键的对称方式为___________。与CN—互为等电子体的分子为___________。（3）NaN3是汽车</td>";
htxt=htxt+"<td width=\"20%\" align=\"right\" valign=\"top\" >jixiaomei <6-14 22:25></td>";
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htxt=htxt+"<td width=\"80%\" class=\"txt\">&nbsp;□ 这份资料很好，对我的帮助很大。</td>";
htxt=htxt+"<td width=\"20%\" align=\"right\" valign=\"top\" >jixiaomei <6-14 22:6></td>";
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