... 因此选 D。( 6 )将文法 G [ S ]改写为 G ' [ S ] : S → aaSlabSlalbaB | bbs B → aaBabS | basibbBb 对: A S- > a100s- > a100 % 50s- > al100 b = " abB = > a ...
確定! 回上一頁