并网运行的同步发电机，调励磁不能改变（）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32656' and id < 2596497 and id<>'2596497' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32656' and id > 2596497 and id<>'2596497' order by id asc limit 5