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问题 单项选择题

在目前我国的城市中，道路广场用地与绿地的面积分别占城市总建设用地的( )。

A．8%～15%
B．15%～25%
C．20%～35% D．60%～75%

答案

参考答案：A

填空题

植保机械中的液泵用来压送药液，以克服（），提高（），增大（）。
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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 (71) . It determines how the various results are computed by the product and presents this information in the form of a (72) . and associated scenarios. The second is (73) , which determines the classes and their attributes; Then determine the interrelationships and interaction among the classes. The last step is (74) , which determines the actions performed by or to each class or subclass and presents this information in the form of (75) .

A. use-case modeling B. class modeling
C. dynamic modeling D. behavioral modeling
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