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．metadata

B．components

C．models

D．entities

十二级分类中在对债项评价指标进行评价时，分为以下（）几项指标。

A.第二还款来源保障度

B.贷款资金流向

C.贷款剩余期限

D.还款记录