試題詳解

下列何者是計算聽力損失指標六分法之公式？
(A)(500Hz 聽力閾值+1000Hz 聽力閾值+2000Hz 聽力閾值+4000Hz 聽力閾值)/6
(B)(500Hz 聽力閾值+2×1000Hz 聽力閾值+2×2000Hz 聽力閾值+4000Hz 聽力閾值)/6
(C)(500Hz 聽力閾值+2×1000Hz 聽力閾值+2000Hz 聽力閾值+4000Hz 聽力閾值)/6
(D)(500Hz 聽力閾值+1000Hz 聽力閾值+2×2000Hz 聽力閾值+2×4000Hz 聽力閾值)/6 。