液体介质的冲击击穿场强高于工频击穿场强。()

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69412' and id < 4494222 and id<>'4494222' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69412' and id > 4494222 and id<>'4494222' order by id asc limit 5