限时电流速断保护的特点是（    ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69481' and id < 4500220 and id<>'4500220' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69481' and id > 4500220 and id<>'4500220' order by id asc limit 5