隐极式电机比凸极式电机的电压变化率大。（   ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69400' and id < 4493276 and id<>'4493276' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69400' and id > 4493276 and id<>'4493276' order by id asc limit 5