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【单选题】
工件材料越脆越硬，刀具（）时，越容易形成崩碎切屑。A.
前角越小，切削厚度也越小
B.
前角越小，切削厚度越大
C.
前角越大，切削厚度也越大
D.
前角越大，切削厚度越小
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【简答题】本征半导体、单一的杂质半导体都和PN结一样具有单向导电性吗?
【简答题】本征半导体、单一的杂质半导体都和PN结一样具有单向导电性吗?
【单选题】Which of the following is NOT true?
A.
Bernard Shaw didn't finish high school, nor did Edison.
B.
One must think carefully before going for a master degree.
C.
The higher your education level, the more money you'll earn.
D.
If you are too well-educated, you'll make things difficult for the society.
【单选题】Why did the girls want to be late for school?
A.
They did not like school.
B.
They had not done their homework.
C.
They did not want to take a test.
【简答题】利用circle方法在窗体中画一个圆桶,如下图所示。
【单选题】Which of the following is NOT true?
A.
Bernard Shaw didn't finish high school, nor did Edison.
B.
There are far more Ph. D. s than the society demands.
C.
The higher your education level, the more money you'll earn.
D.
If you are too well-educated, you'll make things difficult for the society.
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