往复运动的摩擦零件及加工较粗糙的摩擦零件表面应选择黏度小的润滑油。（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24898' and id < 2124679 and id<>'2124679' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24898' and id > 2124679 and id<>'2124679' order by id asc limit 5