电磁系仪表可直接用于（      ）测量。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68472' and id < 4420950 and id<>'4420950' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68472' and id > 4420950 and id<>'4420950' order by id asc limit 5