AnarchitecturalStyledefinesasafamilyofsuchsystemsintermsofa()ofstructuralorganization.Morespecificallyanarchitecturalstyledefinesavocabularyof()andconnectortypes,andasetof()onhowtheycanbecombined.Formanystylestheremayalsoexistoneormore()thatspecifyhowtodetermineasystem'soverallpropertiesfromthepropertiesofitsparts.Manyofarchitecturalstyleshavebeendevelopedovertheyears.Thebest-knownexamplesof(请作答此空)architecturesareprogramswrittenintheUnixshell．
A.event-based B.object-oriented C.pipe-and-filter D.layered正确答案C
