7.下列那一條血管內含有較高濃度的氧氣?
(A)肺動脈(pulmonary artery)
(B)肺靜脈(pulmonary vein)
(C)支氣管動脈(bronchial artery)
(D)奇靜脈(azygos vein)
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統計: A(7), B(136), C(10), D(0), E(0) #1048626
統計: A(7), B(136), C(10), D(0), E(0) #1048626