1个电子伏特定义为1个电子在真空中通过1伏特电位差所获得的动能，其数值大小为

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29311' and id < 2385620 and id<>'2385620' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29311' and id > 2385620 and id<>'2385620' order by id asc limit 5