28.下列那一血管通常不是直接源自於主動脈弓(aortic arch)?
(A)right subclavian artery
(B)left subclavian artery
(C)left common carotid artery
(D)brachiocephalic artery
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統計: A(1379), B(75), C(55), D(128), E(0) #1042568
統計: A(1379), B(75), C(55), D(128), E(0) #1042568