A.25% B.26% C.18%
A.可變組成指數(shù)=固定構(gòu)成指數(shù)×結(jié)構(gòu)影響指數(shù) B.固定構(gòu)成指數(shù)=可變組 C.結(jié)構(gòu)影響指數(shù)=固定構(gòu)成指數(shù)×可變組成指數(shù)
A.下降了26.15% B.下降了28.7% C.下降了71.3%