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【简答题】
电火花型腔加工的工艺方法有: 、 电极更换法、分解电极加工法,单电极摇动法等。
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反馈参考答案：
举一反三
【单选题】1l. Fool I was , I did not believe every word he said.
A.
who
B.
whom
C.
that
D.
which
【单选题】When did the author first meet Henry? Which is not the correct explanation of the word“ author ”?
A.
作者
B.
创造者
C.
校长
【单选题】Direction: You are required to complete the following sentence by deciding on the most appropriate word or words from the 4 choices marked A, B, C, and D. It was not until the next morning the parents...
A.
which
B.
who
C.
that
D.
what
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