使用模仪万用表测量直流电压时，红表笔接负极。（）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32637' and id < 2595184 and id<>'2595184' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32637' and id > 2595184 and id<>'2595184' order by id asc limit 5