52.分娩時胎兒正常的屈曲胎勢,有助於胎頭以何種徑線通過骨盆?
(A)枕額徑(occipito-frontal diameter,OF)
(B)枕下前囟徑(suboccipito-bregmatic diameter,SOB)
(C)枕頦徑(occipito-mentum diameter,OM)
(D)頦下前囟徑(submento-bregmatic diameter,SMB)

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統計: A(0), B(1), C(0), D(0), E(0) #3977946

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#7457733
答案:(B) 枕下前囟徑(subocc...
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