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【简答题】
用标准齿条刀具预加工一齿数 z=25 的渐开线直齿圆柱齿轮,刀具模数为 m =4mm ,毛坯中心到刀具中线的距离 L =49mm ,则被加工齿轮为 ______ 齿轮, 变位系数为 _____ 。
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举一反三
【简答题】697÷（142×3-385）
【简答题】某公司想创一个适合年轻女性的服装品牌,需要了解年轻女性的穿衣偏好、消费能力等,需要做哪些内容的调查?
【简答题】368+______=68+______ 486+328+114=328+（______+______） 857-298=857-300○______ 697-203=697-200○______．
【单选题】This is supposed to be an enlightened age, but you wouldn't think if you could hear what the average man thinks of the average woman! Women won their independence years ago. After a long, bitter strug...
A.
It is not really an enlightened age.
B.
It is different from an enlightened age.
C.
It is the same as an enlightened age.
D.
It is like an enlightened age.
【单选题】This is supposed to be an enlightened age, but you wouldn't think so if you could hear what the average men think of the average women. Women won their independence years ago. After a long, biter stru...
A.
Women's struggle for recognition has been completely won.
B.
Women have proved their abilities in many fields.
C.
Women can not get the same educational opportunities as men.
D.
Women are now regarded as equal to men all over the world.
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