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[单选题]
设文法为:S→SA|AA→a|b则对句子aba,下面()是规范推导。
A.SSASAAAAAaAAabAaba
B.SSASAAAAAAAaAbaaba
C.SSASAASAaSbaAbaaba
D.SSASaSAaSbaAbaaba
提问人:网友18***192
发布时间:2022-01-06
A.SSASAAAAAaAAabAaba
B.SSASAAAAAAAaAbaaba
C.SSASAASAaSbaAbaaba
D.SSASaSAaSbaAbaaba
A、A → ddB | eeB B → aaB | bbB | ε
B、A → aaB | bbB B → ddB | eeB | ε
C、A → Bdd | Bee B → aaB | bbB | aa | bb
D、A → ddB | eeB B → aaB | bbB | aa | bb
A.ab0
B.a0c01
C.aaa
D.bc10
A、L = {| n>0 }
B、L = {| n≥0 }
C、L = {| n>0 }
D、L = { a,b }*
A、L(G[S])={ab,bc}
B、L(G[S])={abc}
C、L(G[S])={abc,abc}
D、L(G[S])={ac,abc}
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