You are writing a custom dictionary.The custom-dictionary class is named MyDictionary.You need to ensure that the dictionary is type safe. Which code segment should you use？（）
- A、A
- B、B
- C、C
- D、D
正确答案:A
答案解析:有
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You are writing a custom dictionary.The custom-dictionary class is named MyDictionary.You need to ensure that the dictionary is type safe. Which code segment should you use？（）
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