项目总投资为2000万元的自来水厂的建设项目( )。

A．应强制性实施工程监理
B．不能实施工程监理
C．可以实施工程监理
D．应实施工程监理

The software architecture of a program or computing system is the structure or structures of the system, which comprise software （1）, the externally （2） properties of those components, and the relationships between them. The architecture is not the operational software. Rather, it is a （3）that enables a software engineer to: analyze the （4） of the design in meeting its stated requirements, consider architectural alternatives at a stage when making design changes is still relatively easy, and reduce the （5） associated with the construction of the software.

4（）

A.changeability

B.effectiveness

C.testability

D.functionality