复合树脂充填时,洞形要求不包括()。
A.洞缘及点线角圆钝
B.前牙可保留无基釉
C.不必做固位形
D.洞缘线圆缓
E.洞缘制备成斜面
参考答案:C
My friend, Tom, may have missed taking the flight to Africa, ______ he can’t arrive for another hour.
A.in which case
B.in that case
C.in case
D.in any case
LKJ-2000监控装置显示界面的标题栏呈条状位于屏幕上侧,显示日期时间及()名称。