数控车床需对刀具尺寸进行严格的测量以获得精确数据，并将这些数据输入（）系统。
A.控制
B.数控
C.计算机
D.数字
参考答案：B
一个底面半径为5cm，母线长为16cm的圆锥，它的侧面展开图的面积是[ ]
A．80πcm2
B．40πcm2
C．80cm2
D．40cm2
-There _____ a class meeting this afternoon.
-Yeah，exciting.[ ]
A. are going to be
B. is going to be
C. is going to have
D. will have
