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document.write('    	<td height="18" bgcolor="#EDECE9">·[AA] 发表评论于 2008/9/30 18:57:55</td>');
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document.write('    	<td style="line-height:24px;font-size:14px;">&nbsp;水低于B点时，机器才会动作抽水，水高于A点时才会停止抽水。</td>');
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document.write('    	<td height="18" bgcolor="#EDECE9">·[] 发表评论于 2008/9/29 22:29:49</td>');
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document.write('    	<td style="line-height:24px;font-size:14px;">&nbsp;当水下降到A点和B点之间时，2脚电位也在1/2vcc。岂不是放了一点水就又开始抽水</td>');
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