放置临时起搏器的指征（） ["有慢性心脏传导系统功能障碍者行大手术","双瓣替换术后","冠心病者行PTCA","瓣膜病人行球囊扩张","有症状的房室传导阻滞"]
全身惟一的联动关节是（）。 ["肩关节","肘关节","膝关节","腕关节","颞下颌关节"]
方丝弓矫治器矫治弓丝上的第二序列弯曲是指（） ["A.内收弯","B.外展弯","C.后倾弯","D.使牙根唇颊、舌向移动的弯曲","E.垂直开大曲"]
诊断畸形中央尖，下列哪一项错误（） ["A.多见于下颌第二前磨牙","B.常为对称性发生","C.该尖位于牙合面颊、舌尖处","D.呈圆锥形突起","E.牙尖折断后，易致牙髓坏死"]
一侧口角歪斜可能是损伤了面神经的（）。 ["颞支","颈支","下颌缘支","颊支","颧支"]
心脏黏液瘤最常见的临床表现有哪些？
