电场力做功与所经过的路径无关，参考点确定后，电场中各点的电位的值便唯一确定，这就是电位（   ）原理。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69471' and id < 4499895 and id<>'4499895' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69471' and id > 4499895 and id<>'4499895' order by id asc limit 5