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【简答题】
数控机床实现插补运算较为成熟并得到广泛应用的是直线插补和 插补。
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【单选题】听力原文：W: You look worried, David. Anything wrong with you? M: Oh, it's nothing really. W: Arc you sure? Would you like to talk about it? M: Well, to be honest, it's.., it's my mother. She... she.., how...
A.
Because his father has suddenly had a heart attack.
B.
Because his wife has been behaving strangely.
C.
Bemuse his mother is still unhappy about his father's death.
D.
Because his daughter is all alone in a very big apartment by the sea.
【单选题】听力原文：M：Wow，look at you，Susan．You look quite different from what you used to． W：Sure．I started exercising regularly one year ago and went from 250 pounds to 158 pounds．And you know what， that is the on...
A.
She lost a lot of weight in two years.
B.
She stopped exercising one year ago.
C.
She had a special way of staying healthy.
D.
She was not a persistent woman before.
【简答题】Linux 系统 有三种类型文件?它们分别是什么?有哪些相同点和不同点?
【简答题】补全对话。 M: What's wrong with you, Linda? You look unhappy. W: (1)__________________________________________. M: Really? What happened to you? W: Well. I walked to school… M: Why? Didn't you go to school...
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