A.104.76% B.5% C.115.5%
A.25% B.26% C.18%
A.可變組成指數(shù)=固定構成指數(shù)×結構影響指數(shù) B.固定構成指數(shù)=可變組 C.結構影響指數(shù)=固定構成指數(shù)×可變組成指數(shù)