下列哪个操作不能防止U盘中病毒？（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27170' and id < 2251123 and id<>'2251123' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27170' and id > 2251123 and id<>'2251123' order by id asc limit 5