水平干线子系统的主要功能是实现信息插座和管理子系统间的连接,其拓扑结构一般为()结构。
A.总线型
B.星形
C.树型
D.环型
参考答案:B
The purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable (16) of the technical requirements for the software product. During the requirements definition phase, the requirements definition team uses an iterative process to expand a broad statement of the system requirements into a complete and detailed specification of each function that the software must perform and each _( 17) that it must meet. The starting point is usually a set of high level requirements from the (18) that describe the project or problem. In either case, the requirements definition team formulates an overall concept for the system and then defines (19) showing how the system will be operated publishes the system and operations concept document and conducts a system concept review (SCR). Following the SCR, the team derives (20) requirements for the system from the high level requirements and the system and operations concept. Using structured or object-oriented analysis, the team specifies the software functions and algorithms needed to satisfy each detailed requirement.
A.producer
B.customer
C.programmer
D.analyser
李白的《菩萨蛮》表达的是一种什么样的情绪?()
A、离情别绪
B、怀才不遇
C、思念亲人
D、同情穷人