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问题 单项选择题

根据《城市市容和环境卫生管理条例》（2017修订）第三十一条：（）产生的废弃物，必须依照有关规定处理。

A.医院、生物制品厂

B.医院、疗养院

C.医院、疗养院、屠宰场

D.医院、疗养院、屠宰场、生物制品厂

答案

参考答案：D

填空题

电子档案的检索系统包括存储和（）两个方面。
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单项选择题

Object-oriented analysis （OOA） is a semiformal specification technique for the object-oriented paradigm. Object-oriented analysis consists of three steps. The first step is（）.It determines how the various results are computed by the product and presents this information in the form of a（）and associated scenarios. The second is（）, which determines the classes and their attributes, then determines the interrelationships and interaction among the classes. The last step is（）, which determines the actions performed by or to each class or subclass and presents this information in the form of（）.

The second is（）， which determines the classes and their attributes.

A．use-case modeling

B．class modeling

C．dynamic modeling

D．behavioral modeling
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