57.牙周韌帶的主纖維束(principal fiber bundles)大概可分為五組,其中何組的數量最多?
(A)齒槽骨嵴組(alveolar crest group)
(B)水平組(horizontal group)
(C)傾斜組(oblique group)
(D)根尖組(apical group)
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統計: A(99), B(68), C(1609), D(29), E(0) #2039974
統計: A(99), B(68), C(1609), D(29), E(0) #2039974