单项选择题
A.DFA D与NFA M的状态数一定相等 B.DFA D与NFA M可识别的记号相同 C.NFA M能识别的正规集是DFA D所识别正规集的真子集 D.DFA D能识别的正规集是NFA M所识别正规集的真子集
A.依赖 B.聚合 C.组合 D.继承
A.Abstraction B.ConcreteImplementorA C.ConcreteImplementorB D.Implementor