电磁型继电器，如果电磁力矩大于弹簧力矩与摩擦力矩的和则继电器就动作，如果电磁力矩小于弹簧力矩与摩擦力矩的和则继电器就返回。（   ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69376' and id < 4491310 and id<>'4491310' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69376' and id > 4491310 and id<>'4491310' order by id asc limit 5