闭环控制系统的位置检测装置装在：()。
A.传动丝杠上
B.伺服电动机轴上
C.机床移动部件上
D.数控装置中
参考答案：C
— How come a simple meal like this costs so much?
— We have________in your bill the cost of the cup you broke just now.
A. added
B. included
C. charged
D. contained
7度时，老年人住宅入口上方，卧室内不宜设置的（）
A.吊灯
B.吊柜
C.吊杆
D.吊顶
