It's not easy to _____ a job now. [ ]
A. look for
B. look after
C. look at
D. find
答案:D
着急信号(),其要求是防护人员撤回。
上前牙PFM全冠颈缘预备至少()
A.1.5~2.0mm
B.0.35~0.5mm
C.0.8~1.5mm
D.1.8~2.0mm
E.2.0mm以上