就对被测电路的影响而言，电流表的内阻（）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='65694' and id < 4241742 and id<>'4241742' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='65694' and id > 4241742 and id<>'4241742' order by id asc limit 5