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發表於:2021-06-01
問題詳情:230Th和232Th是釷的兩種同位素,232Th可以轉化成233U。下列有關Th的説法正確的是A.Th元素的質量數是232 B.Th元素的相對原子質量是231C.232Th轉換成233U是化學變化 D.230T...
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發表於:2021-05-28
問題詳情:Myalarmclockdidn’tgooff,andIwokeuplatethismorning. A.Therewasnothingwrongwithmyalarmclock. B.Myalarmclockworkedwell. C.Nothingwaswrongwithmyalarmclock ...
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發表於:2017-07-27
ATH=aluminatrihydrateStudyonPropertiesofABS/Nano-ATHCompositeStudyonpropertiesofHIPS/SMA/CG-ATHnano-compositeFlameproofroadsurfaceofopen-gradedasphaltfrictioncoursebasedo...
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發表於:2020-07-19
問題詳情: Shesingssobeautifully!Ihaveneverheard . A.thebettervoice B.agoodvoice C.thebestvoice D.abettervoice【回答】D知識點:冠詞題...
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發表於:2022-04-24
問題詳情:下列説法正確的A.Th→Pa+X 中的X是中子B.+→+ 是α衰變C.+→+ 是核聚變D.→+2 是核裂變【回答】C知識點:核裂變與核聚變題型:選擇題...
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發表於:2021-11-02
問題詳情:―Whatdoyou thestory?―It’sboring. A.thinkof B.like C.getto ...