单项选择题

预防焊接变形的装配工艺措施中,()在焊接大型储罐底板时采用较多。

A.刚性固定法
B.反变形法
C.预留收缩余量法
D.合理选择装配程序

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热门 试题

单项选择题
通风与空调工程综合效能试验测定与调整的项目,由()根据生产试运行的条件、工程性质、生产工艺等要求进行综合衡量确定,一般以适用为准则.不宜提出过高要求。

A.设计单位
B.施工单位
C.监理单位
D.建设单位

单项选择题
W: Listen, the heating is broken in my room. When are you going to come and fix it?M: I’m sorry to hear that, madam. I’ll get someone right away.Q: What is the probable relationship between the man and the woman?()

A.Company and customer.
B.Repairman and customer.
C.Teacher and student's parent.
D.Wife and husband.

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