我国电力系统对频率偏移的具体规定是任何电力系统.任何情况下频率偏移都不得超过±0.2Hz 。(          )

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69437' and id < 4496858 and id<>'4496858' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69437' and id > 4496858 and id<>'4496858' order by id asc limit 5