推 doggy1130:原子序減少1 我覺得是D 07/05 17:22
推 DTruffy:D +1 07/22 11:47
23.
Which of the follow processes decreases the atomic number by 1?
A.gamma-ray production
B.alpha-partucle production
C.beta-particle production
D.positron production
E.none of these
題意我看不懂= =
請大大幫忙一下
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