n类手持电动工具是带有（）绝缘的设备。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27213' and id < 2260492 and id<>'2260492' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27213' and id > 2260492 and id<>'2260492' order by id asc limit 5