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【简答题】
根据硬度国家标准,压痕中心距试样边缘距离至少压痕平均直径的 倍,并且不应小于 mm。两相邻压痕中心间距离至少压痕直径的 倍,并且不应小于 mm。
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举一反三
【单选题】How many different ways can you add four positive odd integers together for a sum of 10, without considering the sequence of the integers?
A.
Five
B.
Four
C.
Three
D.
Two
E.
One
【简答题】How many ways can be used to make settlement?
【单选题】How many different ways are there in which you can get in touch with the university if you want to enter?
A.
One
B.
Two
C.
Three
D.
Four
【单选题】How many ways are there to get a word's definition when you study?
A.
One.
B.
Two.
C.
Three.
D.
Not mentioned.
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