三坐标计算机数控精密测量机，采用（）传感器。
A.一维
B.二维
C.三维
参考答案：C
-Why do you look sad?
-There are so many problems _______ [ ]
A. remained to be settled
B. remained setting
C. remaining to settle
D. remaining to be settled
简述资本主义工商业社会主义改造的成功经验。
