牙体预备时应尽量保证的牙本质肩领为()
A.1mm
B.1.5mm
C.2mm
D.2.5mm
E.3mm
参考答案:B
工作票应用钢笔或圆珠笔填写一式两份,经()审核签字后由工作负责人一并交给()办理许可手续。
连词成句。
1. does, how, play, Steven, often
2. hot, day, what, sunny, a
3. radio, music, why, Chinese, is, playing, the
4. in, you, what, do, winter, do, like, to
5. play, I, to, snow, want, the, in