三相异步电动机正常工作时，说法正确的是（   ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69465' and id < 4499117 and id<>'4499117' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69465' and id > 4499117 and id<>'4499117' order by id asc limit 5