题目内容
SF气体多用在稍不均匀电场中,曲率较大的电极为负极性时气隙的击穿电压均小于电极为正时的值。()
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='32602' and id < 2592427 and id<>'2592427' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32602' and id > 2592427 and id<>'2592427' order by id asc limit 5