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问题 单项选择题

气瓶应直立的固定在支架上，不受热，并尽量避免直接受日光照射。储氢罐上应涂以（）。储氢罐上的安全门应定期校验，保证动作良好。

A.红色

B.蓝色

C.白色

答案

参考答案：C

单项选择题 A1/A2型题

男性，30岁。2天前突然出现尿频、尿急、尿痛，伴有发热、全身乏力、食欲缺乏等症状。直肠指检发现前列腺增大，压痛明显，有明显波动感。血常规检查白细胞明显增高。诊断首先要考虑（）。

A.急性前列腺炎

B.急性前列腺膀胱炎

C.急性前列腺炎伴脓肿形成

D.慢性前列腺炎急性发作

E.急性精囊炎
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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 determines 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) .

（74）处填（）。

A. static modeling

B. use-case modeling

C. dynamic modeling

D. class modeling
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