现代计算机的内存通常由半导体器件构成，（ ）在断电后存储的内容将立即丢失。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29461' and id < 2399486 and id<>'2399486' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29461' and id > 2399486 and id<>'2399486' order by id asc limit 5