如果某带电体其电荷分布的体密度p增大为原来的2倍,则其电场的能量变为原来的（）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30391' and id < 2456871 and id<>'2456871' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30391' and id > 2456871 and id<>'2456871' order by id asc limit 5