A.PTm=0.1PomB.PTm=0.6PomC.PTm=0.3PomD.PTm=0.2Pom
A.50%B.100%C.25%D.78.5%
A.h參數(shù)等效電路和高頻等效電路均可B.h參數(shù)等效電路C.高頻等效電路D.特性曲線