判断题

有相互关联尺寸的孔要尽量在一道工序中冲出；当相关联的孔太多，受模具强度及冲压方向等原因而不能一次冲出时，要充分注意制件的加工基准，必须考虑保证孔及孔之间公差的措施。

答案：正确

你可能感兴趣的试题

多项选择题

A trade fair is an exhibition organized so that companies in a specific industry can （）.

A.showcase and demonstrate their latest products and services
B.meet with industry partners and customers
C.study activities of rivals, and examine recent market trends and opportunities
D.sign the contract with clients

单项选择题

下列冷却方式中______是船舶电力推进系统的变流装置通常采用的冷却方式。
A、自然冷却
B、风冷
C、液态氮冷却
D、水冷