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【多选题】
按运动方式分数控机床可分为哪3种?A.
点位控制系统
B.
直线控制系统
C.
轮廓控制系统
D.
曲线控制系统
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反馈参考答案：
举一反三
【简答题】经济学研究的主要内容和对象是什么?宏观经济学和微观经济学研究领域是哪些?
【单选题】What is true about Why?
A.
What to do?
B.
How to do?
C.
The result of work.
D.
The purpose of work.
【多选题】What is true about Maximus?
A.
He is the Roman Emperor.
B.
He is respected because he is a good person.
C.
He is Commodus's friend.
D.
He escapes from Commodus's soldiers.
E.
He saves his family from Commodus's soldiers.
F.
He is captured and becomes a slave.
G.
He must fight other people to the death.
H.
He becomes a very good fighter.
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