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问题 单项选择题

患者男，12岁，左胫上端骨骺处一偏心性溶骨性病变，边界不清，骨皮质完整，无骨膜反应，最可能的诊断是（）

A.非骨化纤维瘤

B.成软骨细胞瘤

C.骨巨细胞瘤

D.动脉瘤样骨囊肿

E.成骨细胞瘤

答案

参考答案：B

多项选择题

一过性视力丧失可见于以下疾病（）

A.视网膜中央动脉痉挛

B.视 * * 水肿

C.白内障

D.体位性低血压

E.弱视
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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. (101) 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 (102) . A diagram graphically represents things, and the relationships between these things. These (103) 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. (104) are used to capture the physical organization of the things in your system, i. e. , how one object relates to another. (105) 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.

A．views

B．diagrams

C．user views

D．structure pictures
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