题目内容
直流电机的磁路由哪些（ ）。
2021-12-27
A.电枢磁轭、定子磁轭
B.主磁极铁芯
C.电枢齿
D.气隙
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='30222' and id < 2444784 and id<>'2444784' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30222' and id > 2444784 and id<>'2444784' order by id asc limit 5