46.下列何種血管的總截面積最大?
(A)主動脈(aorta)
(B)動脈(arteries and arterioles)
(C)微血管(capillaries)
(D)靜脈(venules and veins)
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統計: A(49), B(11), C(287), D(40), E(0) #3489354
統計: A(49), B(11), C(287), D(40), E(0) #3489354