闭锁式纵联距离保护，以两端的距离Ⅱ段继电器作为（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69014' and id < 4466909 and id<>'4466909' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69014' and id > 4466909 and id<>'4466909' order by id asc limit 5