商业银行通常可以采用下列哪些手段管理信用风险？（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26482' and id < 2211329 and id<>'2211329' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26482' and id > 2211329 and id<>'2211329' order by id asc limit 5