19.心室收縮時,那些瓣膜會關閉?
(A)二尖瓣(bicuspid valve)、三尖瓣(tricuspid valve)
(B)三尖瓣(tricuspid valve)、肺動脈瓣(pulmonary valve)
(C)二尖瓣(bicuspid valve)、主動脈瓣(aortic valve)
(D)主動脈瓣(aortic valve)、肺動脈瓣(pulmonary valve)
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統計: A(529), B(6), C(18), D(38), E(0) #1946862
統計: A(529), B(6), C(18), D(38), E(0) #1946862