47 測量胎兒肺部成熟度的指標 lecithin-to-sphingomyelin ratio(LSR),所用的檢體是:
(A)孕婦的血液
(B)新生兒的血液
(C)臍帶血
(D)羊水

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統計: A(29), B(31), C(26), D(290), E(0) #1273636