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【简答题】
本任务采用三面刃铣刀进行阶台的铣削加工,铣刀的直径为100mm,主轴转速n=95r/min,刀具的齿数z=8,铣刀宽度B=10mm,每齿进给量=0.05mm/z。请计算切削速度_______m/min、每分进给量_______mm/min。(计算结果舍去小数直接取整)
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【单选题】Which of the following is right about the silk road? ( )
A.
Zhang Qian and BanChao in Han Dynasty set out two journeys to the Western Regions.
B.
The ancient silk road spent its childhood and gradually grew up in Zhou dynasty.
C.
Tang Dynasty saw the silk road rise to its most flourishing period in history.
D.
The ancient silk road declined gradually in the Yuan Dynasty.
【单选题】Which of the following is true about the Maritime Silk Road?
A.
It is the longest and most ancient road among all of the ocean routes.
B.
It is a good complement to the route on land and even replaces it later.
C.
It prospers in the Tang and Song Dynasties with the development of shipbuilding and navigation.
D.
All of the above.
【简答题】营销分析系统,通常由 、统计库和模型库三部分组成。
【单选题】Which of the following is right about the silk road? ( )
A.
Zhang Qian and BanChao in Han Dynasty set out two journeys to the Western Regions.
B.
The ancient silk road spent its childhood and gradually grew up in Zhou dynast.
C.
Tang Dynasty saw the silk road rise to its most flourishing period in history.
D.
The ancient silk road declined gradually in the Yuan Dynasty.
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