下图所示电路中，A、B两端间的等效电阻RAB为（   ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69473' and id < 4501176 and id<>'4501176' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69473' and id > 4501176 and id<>'4501176' order by id asc limit 5