44.功能性肺餘量(functional residual capacity)由下列何者組成?
(A)吸氣保留容積(inspiratory reserve volume)+吐氣保留容積(expiratory reserve volume)
(B)吐氣保留容積(expiratory reserve volume)+殘餘容積(residual volume)
(C)殘餘容積(residual volume)+潮氣容積(tidal volume)
(D)吸氣活量(inspiratory capacity)+吐氣保留容積(expiratory reserve volume)