波浪变形最容易产生于厚板的焊接。

题型:判断题

问题:

波浪变形最容易产生于厚板的焊接。

考点:气焊工考试中级气焊工考试中级气焊工考试题库
题型:判断题

运输需求的波动性是指运输需求量在( )上呈现出的不均衡状态。

A.线路分布
B.时间分布
C.地区分布
D.运输方式分布

题型:判断题

昏迷或牙关紧闭者使用开口器时,应从()处放入。

题型:判断题

补全对话。

A: Hi, Paul! Did you 1._____a nice weekend?

B: No. My computer is 2._____. It doesn't work now. I think something is

3._____with it.

A: I'm 4._____to hear that. Is it a new 5._____?

B: Yes. My parents 6._____ it for me last week.

A: Don't worry 7._____it. Do you know how to use it ?

B: I don't know 8._____about computers. That's the problem.

A: My brother is working at a computer company. He is a computer 9._____.

10.____he'll help you.

B: Thank you very much.

1._____ 2._____ 3._____ 4._____ 5._____

6._____ 7._____ 8._____ 9._____ 10._____

题型:判断题

下列各组元素中,属于同一周期的是

A.碳、氧、硫

B.硅、磷、氯

C.锂、钠、钾

D.氟、氯、溴

题型:判断题

用于过敏、镇静、但青光眼、癫痫、甲亢患者应慎用的是().

A.盐酸异丙嗪 

B.马来酸氯苯那敏 

C.盐酸苯海拉明 

D.茶苯海明 

E.盐酸地芬尼多

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