绕线式异步电动机采用转子串电阻调速，若总制动转矩保持不变，则调速前后（   ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69467' and id < 4499415 and id<>'4499415' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69467' and id > 4499415 and id<>'4499415' order by id asc limit 5