对于发电机来说，同步电机的额定值为（      ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68475' and id < 4421146 and id<>'4421146' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68475' and id > 4421146 and id<>'4421146' order by id asc limit 5