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htxt=htxt+"<tr><td height=\"25\">『资料评论』&nbsp;&nbsp;<a href=\"/file_review.asp?id=30343126\" 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>. 某同学在用稀硫酸与锌制取氢气的实验中，发现加入少量硫酸铜溶液可加快氢气的生成速率。请回答下列问题：1硫酸铜溶液可以加快氢气生成速率的原因是________________2实验室中现有Na2SO4、CuCl2、MgSO4、K2SO4等4种溶液，可与上述实验中CuSO4溶液起相似作用的是________；3要加快上述实验中气体产生的速率，还可采取的措施有_________</td>";
htxt=htxt+"<td width=\"20%\" align=\"right\" valign=\"top\" >xujing3300 <4-24 16:30></td>";
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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 <9-26 10:11></td>";
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