闭环控制数控机床。 -题库考试答案搜索网

闭环控制数控机床。

单选题

2021-07-17 23:40

A、是伺服电动机与传动丝杠之间采用齿轮减速连接的数控机床
B、采用直流伺服电动机并在旋转轴上装有角位移检测装置
C、采用步进电动机并有检测位置的反馈装置
D、采用交、直流电动机并有检测位移的反馈装置

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正确答案

D

试题解析

标签：工程测量技术高起专控制测量 2020年第二学期补考

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