单选

● HTML中标记用于定义表格的 (69) 。

(69)

  • A.行             
  • B.列              
  • C.单元格            
  • D.标题
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● HTML中标记用于定义表格的 (69) 。

(69)

  • A.行             
  • B.列              
  • C.单元格            
  • D.标题

 ● For nearly ten years, the Unified Modeling Language (UML) has been the industry standard for visualizing, specifying, constructing, and documenting the   (71)   of a software-intensive system. As the  (72)   standard modeling language, the UML facilitates communication and reduces confusion among project  (73) . The recent standardization of UML 2.0 has further extended the language's scope and viability. Its inherent expressiveness allows users to  (74)   everything from enterprise information systems and distributed Web-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 patient healthcare system, software engineering in aircraft combat systems, and the design of hardware. To understand the UML, you need to form. a conceptual model of the language, and this requires learning three major elements: the UML's basic building blocks, the rules that dictate how those building blocks may be put together, and some common mechanisms that apply throughout the UML.

(71)

  • A. classes       
  • B. components 
  • C. sequences         
  • D. artifacts    (72)
  • A. real           
  • B. legal     
  • C. de facto         
  • D. illegal    (73)
  • A. investors            
  • B. developers   

● 在Windows系统中设置默认路由的作用是 (67) 。

(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

● 要实现记录的物理顺序与索引项次序一致,应选择的索引类型是 (61) 。

(61)

  • A. HASH 索引   
  • B. 聚簇索引   
  • C. B+树索引     
  • D. 单一索引

● 在C/S 体系结构中,客户端执行的操作是 (55) 。

(55)

  • A. 触发器     
  • B. 嵌入式SQL 
  • C. 存储过程   
  • D. 扩展存储过程
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