The software architecture of a program or computing system is the structure or structures of the system, which comprise software______, the externally ______ properties of those components, and the relationships between them. The architecture is not the operational software. Rather, it is a ______ that enables a so, ware engineer to: analyze the ______ 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 ______ associated with the construction of the software.

A．framework
B．deliverables
C．representation
D．semantic models

妊娠期心力衰竭见于（）

A.孕34周心悸，气短，自幼即发绀，从未能参加体力劳动，能平卧，肺无啰音

B.孕34周气急，发绀，不能平卧，肺底部持续湿啰音，颈静脉充盈

C.孕34周心悸，气促，心界稍扩大，心尖区可闻及Ⅱ级柔和收缩期杂音

D.孕34周心悸，气急，心尖区可闻及Ⅲ级收缩期杂音及舒张期杂音

E.孕34周，轻微活动即有胸闷，气急，静息心率114次/分，呼吸22次/分