校验距离三段式保护的远后备灵敏系数时，分支系数取最大值是为了满足保护的（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69377' and id < 4491338 and id<>'4491338' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69377' and id > 4491338 and id<>'4491338' order by id asc limit 5