下面哪一种不是光纤的固有损耗 。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30264' and id < 2448288 and id<>'2448288' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30264' and id > 2448288 and id<>'2448288' order by id asc limit 5