银行要求申请贷款的客户提供保证担保.这种做法在风险管理中称为（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25453' and id < 2143645 and id<>'2143645' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25453' and id > 2143645 and id<>'2143645' order by id asc limit 5