计算机网络最基本的功能是（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27170' and id < 2251166 and id<>'2251166' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27170' and id > 2251166 and id<>'2251166' order by id asc limit 5