专业技术中级资格数据库系统工程师基础知识2009年上半年数据库系统工程师上午试卷(第5页)

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41● 在Windows系统中设置默认路由的作用是（67）。
A.当主机接收到一个访问请求时首先选择的路由
B.当没有其他路由可选时最后选择的路由
C.访问本地主机的路由
D.必须选择的路由
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42● HTML<body>元素中，（68）属性用于定义超链接被鼠标点击后所显示的颜色。
A.alink
B.background
C.bgcolor
D.vlink
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43● HTML中<tr >标记用于定义表格的（69）。
A.行
B.列
C.单元格
D.标题
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44● 以下不符合XML文档语法规范的是（70）。
A.文档的第一行必须是XML文档声明
B.文档必须包含根元素
C.每个开始标记必须和结束标记配对使用
D.标记之间可以交叉嵌套
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45● For nearly ten years, the Unified Modeling Language (UML) has been the industrystandard for visualizing, specifying, constructing, and documenting the （71） of asoftware-intensive system. As the （72） standard modeling language, the UML facilitatescommunication and reduces confusion among project （73） . The recent standardization ofUML 2.0 has further extended the language's scope and viability. Its inherent expressivenessallows users to （74） everything from enterprise information systems and distributedWeb-based applications to real-time embedded systems. The UML is not limited to modeling software. In fact, it is expressive enough to model（75） systems, such as workflow in the legal system, the structure and behavior of a patienthealthcare system, software engineering in aircraft combat systems, and the design ofhardware. To understand the UML, you need to form a conceptual model of the language, and thisrequires learning three major elements: the UML's basic building blocks, the rules that dictatehow those building blocks may be put together, and some common mechanisms that applythroughout the UML.
A.classes
B.components
C.sequences
D.artifacts
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专业技术中级资格数据库系统工程师基础知识2009年上半年数据库系统工程师上午试卷

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