試題詳解

下列何者是計算聽力損失指標四分法公式？
(A)(500Hz 聽力閾值+1000Hz 聽力閾值+2000Hz 聽力閾值)/4
(B)(2×500Hz 聽力閾值+1000Hz聽力閾值+2000Hz 聽力閾值)/4
(C)(500Hz 聽力閾值+2×1000Hz 聽力閾值+2000Hz 聽力閾值)/4
(D)(500Hz 聽力閾值+1000Hz 聽力閾值+2×2000Hz聽力閾值)/4 。