题目内容

喷粉处理时,引射气流量下降、压力增高说明()。

A. 喷枪熔断
B. 喷枪堵塞
C. 喷粉罐喉口堵塞

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喷粉处理采用()气力输送粉剂。

A. 柱塞流
B. 脉冲波
C. 悬浮流

连铸机的机型有哪几类?

A restorative material that has a high proportional limit,compared with one with a lower proportional limit,invariably has()

A. greater ductility
B. greater toughness
C. a higher modulus ofelasticity
D. more resistance to permanent deformation

连铸对钢水有哪些要求?

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