20.房室結(AV node)最靠近下列何處?
(A)節制帶(moderator band)
(B)下腔靜脈與右心房交界
(C)冠狀竇開口(opening of coronary sinus)
(D)界脊(crista terminalis)
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統計: A(77), B(102), C(492), D(91), E(0) #2041717
統計: A(77), B(102), C(492), D(91), E(0) #2041717