特低电压限值是指在任何条件下，任意两导体之间出现的（）电压值。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='27281' and id < 2260579 and id<>'2260579' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27281' and id > 2260579 and id<>'2260579' order by id asc limit 5