展成法所用的刀具，刀刃的形状和被切齿轮齿槽的形状相同。
查看答案
展成法所用刀具和被加工齿轮的模数m和压力角α相同。
A. 对
B. 错
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A. Study programmes.
B. Outdoor programmes.
C. Socialising programmes.
D. Typical sports programmes.
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A. To let students have fun.
B. To teach students to do those sports well.
C. To let students enjoy climbing mountains.
D. To show students how to jump out of an aeroplane.
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A. Students will receive transport and equipment.
B. Students will feel excited with outdoor activities.
C. Students will have special experiences to enrich their lives.
D. Students will form close relationships with their classmates.
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