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【单选题】

数控机床零部件为标准件的比率为( )

A.
全部
B.
部分
C.
D.
越少越好的
题目标签:部件标准件机床
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参考答案:
举一反三

【单选题】数控机床的核心是( )。

A.
伺服系统
B.
数控系统
C.
系统反馈
D.
传动系统

【单选题】In the last two hundred years there have been great changes in the method of production of goods. This is now also true of the building industry; for mechanization has been introduced. System building...

A.
the latter uses ready-made internal features
B.
panels are cast in a level position
C.
the former is used to build walls and floors while the latter to construct bathrooms or bedrooms
D.
the former is more expensive than the latter

【多选题】数控机床主机包括( )

A.
主轴
B.
导轨
C.
床身
D.
交换工作台
E.
排屑装置

【单选题】我国高速加工机床的进给系统一般是( )

A.
精密步进电机+精密丝杆
B.
高性能伺服电机+精密丝杆
C.
交流伺服电机+滚珠丝杠螺母副
D.
直线驱动电机
相关题目:
【单选题】数控机床的核心是( )。
A.
伺服系统
B.
数控系统
C.
系统反馈
D.
传动系统
【单选题】In the last two hundred years there have been great changes in the method of production of goods. This is now also true of the building industry; for mechanization has been introduced. System building...
A.
the latter uses ready-made internal features
B.
panels are cast in a level position
C.
the former is used to build walls and floors while the latter to construct bathrooms or bedrooms
D.
the former is more expensive than the latter
【多选题】数控机床主机包括( )
A.
主轴
B.
导轨
C.
床身
D.
交换工作台
E.
排屑装置
【单选题】我国高速加工机床的进给系统一般是( )
A.
精密步进电机+精密丝杆
B.
高性能伺服电机+精密丝杆
C.
交流伺服电机+滚珠丝杠螺母副
D.
直线驱动电机
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