操作数控铣床时，长发操作者可以不用戴防护帽。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30405' and id < 2458020 and id<>'2458020' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30405' and id > 2458020 and id<>'2458020' order by id asc limit 5