熔断器的保护特性又称为（）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27224' and id < 2260090 and id<>'2260090' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27224' and id > 2260090 and id<>'2260090' order by id asc limit 5