精密夹具装配后进行一次精加工是为了消除定位元件的（）。
A.定位误差
B.变形
C.位置误差
D.尺寸误差
参考答案：C
癌症疼痛的康复治疗有几种方法（）
A.1
B.3
C.5
D.7
E.9
In _____ time, one of the most famous _____ will visit our school. [ ]
A. few days; man actors
B. a few days'; men actors
C. a few day; men actor
D. a few day's; man actor
