27.下列何者可防止血液回流至右心室?
(A)三尖瓣(tricuspid valve)
(B)二尖瓣(bicuspid valve)
(C)肺動脈瓣(pulmonary valve)
(D)主動脈瓣(aortic valve)
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統計: A(157), B(35), C(260), D(21), E(0) #3489335
統計: A(157), B(35), C(260), D(21), E(0) #3489335