异步电动机处于理想空载状态时，转差率s为（    ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69326' and id < 4488154 and id<>'4488154' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69326' and id > 4488154 and id<>'4488154' order by id asc limit 5