单项选择题

Which sentence is in accordance with the principle of courtesy? A.
We must refuse your offer. B.
We regret that we are unable to accept your offer.

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问答题

智慧树知到《Java面向对象程序设计》章节测试答案-3

答案: D.调用对象的clone()方法
正确答案:用new关键字创建对象;运用反射手段,调用java.lang.Cla...
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