A.輸入信號(hào)功率Lin-接收信號(hào)功率Lin B.輸出信號(hào)功率Lout-接收信號(hào)功率Lin C.接收信號(hào)功率Lin-輸出信號(hào)功率Lout D.接收信號(hào)功率Lin-輸入信號(hào)功率Lin
A.5歐姆 B.10歐姆 C.20歐姆 D.50歐姆
A.35% B.45% C.85% D.95%