第四心音出现于
A.等容收缩期B.心室舒张早期C.心室舒张中期D.心房舒张时E.心房收缩时
参考答案:E
患者男性,58岁,上颌牙列缺失,缺失,双侧上颌结节过度增生,量相应牙槽嵴骨尖,远中深龋,远中舌尖缺损,已做完善根管充填,不松动,智齿,近中阻生,牙石(Ⅲ)
上总义齿制作时,哪个部位可不做缓冲处理()
A.切牙乳突
B.腭皱
C.上颌硬区
D.上唇系带
E.颧突
His writing is so confusing that it's difficult to make out ________ he is trying to express.
A.what is it
B.what is it that
C.what is that
D.what it is that