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问题 单项选择题 A1/A2型题

急性阑尾炎患者在发病初期表现为脐周部疼痛的原因是（）。

A.胃肠功能紊乱

B.阑尾位置不固定

C.炎症扩散至脐周

D.炎性渗出液刺激壁层腹膜

E.内脏牵涉痛

答案

参考答案：E

单项选择题

It should go without saying that the focus of UML is modeling. However, what that means, exactly, can be an open-ended question. (71) is a means to capture ideas, relationships, decisions, and requirements in a well-defined notation that can be applied to many different domains. Modeling not only means different things to different people, but also it can use different pieces of UML depending on what you are trying to convey. In general, a UML model is made up of one or more (72) . A diagram graphically represents things, and the relationships between these things. These (73) can be representations of real-world objects, pure software constructs, or a description of the behavior of some other objects. It is common for an individual thing to show up on multiple diagrams; each diagram represents a particular interest, or view, of the thing being modeled. UML 2.0 divides diagrams into two categories: structural diagrams and behavioral diagrams. (74) are used to capture the physical organization of the things in your system, i. e. , how one object relates to another. (75) focus on the behavior of elements in a system. For example, you can use behavioral diagrams to capture requirements, operations, and internal state changes for elements.

（71）处应填（）。

A．Programming

B．Analyzing

C．Designing

D．Modeling
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多项选择题

以下那种信号可以使用频谱仪进行测试（）。

A.IQ信号

B.系统时钟

C.GSM发射信号

D.IIC信号
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