患者,男性,48岁。经诊断为右下颌第一磨牙Ⅱ度根分叉病变,则一般不采取()
A.引导组织再生术
B.截根术
C.牙龈成形术
D.袋壁切除术
E.根向复位瓣术
参考答案:B
His parents make him _______ at night.
A.stay at home
B.stays at home
C.to stay at home
D.to staying at home
调节彩色血流显像内容,错误的是
A.调节彩色增益B.调节彩色滤波器C.调节彩色速度标尺D.调节脉冲多普勒的取样容积E.调节彩色取样框大小