有一台两极绕线式异步电动机要把转速调上去，下列哪一种调速方法是可行的（）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32657' and id < 2596649 and id<>'2596649' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32657' and id > 2596649 and id<>'2596649' order by id asc limit 5