-Can I help you?
-__________.[ ]
A. Thank you
B. Yes, please, I want a pen
C. I'm sorry
答案:B
牙周袋深度是指
A.龈缘至袋底的距离B.龈缘至釉牙骨质界的距离C.釉牙骨质界至袋底的距离D.牙龈至探诊出血点的距离E.釉牙骨质界至出血点的距离
检影验光时,1米处检影验光正好中和,90度方向用-2.00D柱镜中和,180度方向用-0.50D柱镜中和。该例验光结果为()
A.-0.50DS/-1.50DC×180
B.-0.50DS/-1.50DC×90
C.-1.50DS/-1.50DC×180
D.-1.50DS/-0.50DC×180
E.-1.50DS/-0.50DC×90