当系统频率高于额定频率时，方向阻抗继电器最大灵敏角（   ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69518' and id < 4503712 and id<>'4503712' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69518' and id > 4503712 and id<>'4503712' order by id asc limit 5