题目
A.SÞSAÞSAAÞAAAÞaAAÞabAÞaba
B.SÞSAÞSAAÞAAAÞAAaÞAbaÞaba
C.SÞSAÞSAAÞSAaÞSbaÞAbaÞaba
D.SÞSAÞSaÞSAaÞSbaÞAbaÞaba
第5题
A.{0,10,110,101111}
B.{01,001,000,1}
C.{b,c,aa,ab,aba}
D.{1,11,101,001,0011}
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