50 L/S(Lecithin/Sphingomyelin)比例主要用來測試那一種器官的成熟度?
(A)心臟
(B)肝臟
(C)腎臟
(D)肺臟
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統計: A(22), B(44), C(20), D(245), E(0) #1338214
統計: A(22), B(44), C(20), D(245), E(0) #1338214