髙速旋转的机械上采用的联轴器是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24893' and id < 2124471 and id<>'2124471' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24893' and id > 2124471 and id<>'2124471' order by id asc limit 5