断路器失灵保护所需动作延时，应为断路器跳闸时间，保护返回时间之和再加裕度时间。（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69397' and id < 4492392 and id<>'4492392' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69397' and id > 4492392 and id<>'4492392' order by id asc limit 5