试卷相关题目
-
SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69433' and id < 4496450 and id<>'4496450' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69433' and id > 4496450 and id<>'4496450' order by id asc limit 5
,
,
,则电阻R两端的电压U应等于( )。
湘公网安备:43011102000856号 
