在面向对象分析过程中，用概念模型来详细描述系统的问题域，用（）来表示概念模型。（）关系用于表示类与类、接口与接口之间的继承关系；在Java中，用（作答此空）关键字来直接表示这种关系。
- A.extends
- B.implements
- C.generalization
- D.realization
正确答案及解析
正确答案
解析
在面向对象分析过程中，用概念模型来详细描述系统的问题域。类图用于描述系统的结构化设计，即用来表示概念模型，它最基本的元素是类或接口，表达了类、接口以及它们之间的静态结构和关系。表6-23给出了类图的六种关系。
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- A.sensor
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- A.low-level
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- A.19th
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- A.path
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