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【判断题】
已知文法G:({A, B, C},{a, b, c},P ,S), 其中:P为1S→Ac | aB 2 A→ab 3B→bc , 可以生成两棵推导abc的语法树。
A.
正确
B.
错误
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Task 1 Directions: After reading the following passage, you will find 5 questions or unfinished statements, numbered 36 through 40. For each question or statement there are 4 choices marked A, B, C, a...
A.
in his mind
B.
in his laboratory
C.
with microscope
D.
with telescopes