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htxt=htxt+"<tr><td height=\"25\">『资料评论』&nbsp;&nbsp;<a href=\"/file_review.asp?id=30289213\" 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>、氯化铵受热分解：NH4Cl △ NH3↑  HCl↑ 碳酸氢氨受热分解：NH4HCO3 △ NH3↑  H2O↑  CO2↑ 硝酸铵与氢氧化钠反应：NH4NO3  NaOH △ NaNO3 NH3↑  H2O（检验NH4的方法： </td>";
htxt=htxt+"<td width=\"20%\" align=\"right\" valign=\"top\" >xujing3300 <1-1 17:1></td>";
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htxt=htxt+"<td width=\"80%\" class=\"txt\">&nbsp;□ <font color=red><b>[好评]</b></font>还好吧</td>";
htxt=htxt+"<td width=\"20%\" align=\"right\" valign=\"top\" >viyeana111 <12-29 21:51></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>很不错</td>";
htxt=htxt+"<td width=\"20%\" align=\"right\" valign=\"top\" >zhonghy <10-21 21:54></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>行</td>";
htxt=htxt+"<td width=\"20%\" align=\"right\" valign=\"top\" >spf1234 <9-2 8:35></td>";
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