管道内连续流动着的流体,当遇到安插在管内的节流装置时,流速会()的。
A、收缩
B、扩大
C、先收缩后扩大
D、先扩大后收缩
参考答案:C
用友报表系统中,QM( )函数的含义是,取( )数据。
A.期初余额
B.期末余额
C.借方发生额
D.贷方发生额
The purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable (6) 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 (7) that it must meet. The starting point is usually a set of high-level requirements from the (8) that describe the project or problem. In either case, the requirements definition team formulates an overall concept for the system and then defines (9) 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 (10) 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.function
B.definition
C.specification
D.statement