上前牙金属烤瓷冠牙体预备,切端至少磨除()
A.1mm
B.1.5mm
C.2mm
D.2.5mm
参考答案:C
水封更换后应达到的要求是舒展、平整、压板的压力均匀,挡水过程中无射流且漏水量不得超过(),否则,重新调整安装。
A、0.1L/S
B、0.2L/S
C、0.5L/S
D、1.0L/S
—I want a_________ to cut the big apple. Could you pass me one?
—Certainly, here you are.
A. fork B. knife C. spoon