An architectural Style defines as a family of such systems in terms of a (71) 、of structural organization.More specifically an architectural style defines a vocabulary of
(72) and connector types, and a set of (73) on how they can be combined. For many styles there may also exist one or more (74) that specify how to determine a system’s overall properties from the properties of its parts. Many of architectural styles have been developed over the years.The best-known examples of (75) architectures are programs written in the Unix shell．

A．functions
B．code segments
C．interfaces
D．constraints

项目管理中使用的甘特(Gantt)图______。

A．使管理者明确一个作业的延迟对另一作业的影响

B．清晰地表明了各个作业之间的衔接关系

C．清晰地定义了关键路径

D．可以随时将实际进度与计划进度进行比较