如果桨证券是无风险的，则其风险系数为（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25444' and id < 2143274 and id<>'2143274' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25444' and id > 2143274 and id<>'2143274' order by id asc limit 5