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问题 多项选择题

下面哪些项目是使用光学瓦斯检定器之前的工作准备内容（）

A.检查药品性能

B.检查气路系统

C.检查光路系统

D.检查电路系统

E.换气对零

答案

参考答案：A, B, C, D, E

单项选择题 A2型题

男性，18岁，因关节疼痛服用吲哚美辛（消炎痛）3天，出现上腹不适，呕吐咖啡色液体3口，为进一步明确诊断，首选的检查措施为（）

A.急诊胃肠钡餐检查

B.急诊内镜检查

C.急诊剖腹探查

D.吞线试验

E.出血停止1周后再作有关检查
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单项选择题

System analysis is traditionally done top-down using structured analysis based on (90) ．Object-oriented analysis focuses on creation of models．The three types of the analysis model are (91) ．There are two substages of object-oriented analysis． (92) focuses on real-world things whose semantics the application captures．The object constructed in the requirement analysis shows the (93) of the real-world system and organizes it into workable pieces． (94) addresses the computer aspects ofthe application that are visible to users．The objects are those which can be expected to vary from time to time quite rapidly．

A．Program analysis
B．Function requirement
C．Application analysis
D．Physical model
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