在直流电路中，常用棕色表示正极。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27282' and id < 2260602 and id<>'2260602' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27282' and id > 2260602 and id<>'2260602' order by id asc limit 5