距离保护采用三段式，分为相间距离保护和（  ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69478' and id < 4500795 and id<>'4500795' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69478' and id > 4500795 and id<>'4500795' order by id asc limit 5