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发表于:2021-01-20
问题详情:铀是常用的一种核燃料,若它的原子核发生了如下的裂变反应:U+na+b+2n,则a+b可能是()A.Xe+Kr B.Ba+Kr C.Ba+Sr D.Xe+Sr【回答】D知识点:核裂...
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发表于:2017-10-07
Thelastthingshesawwastheglintoftheaxebladeintheeerie,incandescentlight.ThankstothisphotographicevidencefromBestMadeCo.,wecandefinitivelysaythey'rethinnerthananaxeblade.E...
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发表于:2018-01-12
Theexecutionerputdownhisaxeandstoodquietly.Theyuseanaxeanddisfiguretherhino'sface.Oneofthese,“Dementia13”,hisyouthfulaxe-murderopus,isreferredtoin“Tetro”whenhisprota...