直流电的理化特性不包括（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25669' and id < 2157388 and id<>'2157388' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25669' and id > 2157388 and id<>'2157388' order by id asc limit 5