2. 计算机
  3. The lower-level classes(known as subclasses or derived classes)(73)state and behavior from the higher-level class(known as a sup

The lower-level classes(known as subclasses or derived classes)(73)state and behavior from the higher-level class(known as a sup

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问题 The lower-level classes(known as subclasses or derived classes)(73)state and behavior from the higher-level class(known as a super class or base class)．
选项 A、request
B、inherit
C、invoke
D、accept
答案B
解析 参考译文
低层的类(也称子类或派生类)从高层类(也称为超类或基类)中继承了状态和行为。
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