要实现无线上网，除了有无线网卡和无线路由，还必须有（）。A．无线AP B．电话线 C

对于一对相对性状的遗传实验来说，不必具备的条件是（）

A.选用杂交实验的两个亲本一定要是纯种

B.选用的一对相对性状一定要有明显的差异

C.一定要让显性亲本作父本

D.一定要让两个亲本之间进行有性杂交

下列程序的输出结果是( )　　main( )　　　 int i，j，m＝0，n＝0；　　　for(i=0；i＜2；i+ +)　　　　for(j＝0；j＜2；j+ +)　　　　if(j＞＝i) m＝1；　　　n+ +；　　　printf("%d\\n"，n)；　　

A．4
B．2
C．1
D．0

通风法属于( )

A．清洁养护法
B．除湿养护法
C．密封养护法
D．对抗养护法
E．低温养护法

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．criterion

B．standard

C．model

D．system

哪项属于建设用地规划管理的任务

A．依法实行国有土地有偿使用制度

B．控制合理使用土地、保障城市规划的实施

C．支持发展居民住宅建设改善人民居住条件

D．严格控制耕地转为非耕地