异步电动机处于理想空载状态时，转差率为（）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32657' and id < 2596645 and id<>'2596645' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32657' and id > 2596645 and id<>'2596645' order by id asc limit 5