负载运行的凸极同步发电机，励磁绕组突然断线，则电磁功率为零。（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69465' and id < 4499163 and id<>'4499163' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69465' and id > 4499163 and id<>'4499163' order by id asc limit 5