载荷小而平稳，仅承受径向载荷，转速髙应选用（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='24901' and id < 2124824 and id<>'2124824' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24901' and id > 2124824 and id<>'2124824' order by id asc limit 5