焊接就是通过加热或加压,或者两者并用,并且用或不用填充材料,使焊件达到()结合的一种

题型:单项选择题

问题:

焊接就是通过加热或加压,或者两者并用,并且用或不用填充材料,使焊件达到()结合的一种加工方法。

A.原子

B.分子

C.中子

D.电子

考点:初级电焊工考试初级电焊工考试题库
题型:单项选择题

Danny was just tired about the way things were going. His mom came to the school and went on and on about Rick Jackson. It seemed that she would never stop talking. "Somebody's got to stop that boy!" she was shouting. "Rick's troubling everybody in the neighborhood. And he loves to pick on little boys like Danny. "

Mrs. Green, Danny's teacher, was concerned (担心) a lot."I didn't know that Danny was being picked on," she answered."He's never said anything about this to me!"Mrs. Green looked at Danny."How long has this been going on?" she asked. Danny could only shake his head and look at the floor. He knew if he said a word about this, he would have trouble after school.

Danny hadn't said anything about the problem because he wanted to do things with the boys in the neighborhood. After all, most of them were nice to him. He hated to leave the gang just because of Rick. Maybe the time had come to find new friends. He felt it hard to make up his mind.

小题1:We learn from the reading that ___________,

A. Danny was not a good student

B. Danny's mother was quite worried about Danny

C. Danny wanted to get away from Rick

小题2:When Danny’s mother came for Mrs. Green, Mrs. Green __________.

A. was still in the dark about it

B. said sorry to Danny's mother

C. called Rick in to explain it.

小题3:Danny now _________.

A. was tired of the school and his friends

B. was always alone to stay away from Rick

C. was not sure what he should to do with the problem

小题4:Danny didn't say anything about the matter to Mrs. Green because__________.

A. she had known it

B. The other boys would tell her

C. He didn't want to be in trouble

小题5:The word ‘gang’ in the reading means __________.

A. a place for boys to play games

B. a group of young people

C. a school bus for children to and from school

题型:单项选择题

慢性进行性视野缩小常见于()

A.中心性浆液性视网膜脉络膜病变

B.球后视神经炎

C.视盘炎

D.视网膜脱离

E.原发性视网膜色素变性

题型:单项选择题

检查内源性凝血途径的试验是()。

A.PT

B.APTT

C.TT

D.FDP和DD

E.以上都不是

题型:单项选择题

CONSTEEL电炉的冶金特点是什么?

题型:单项选择题

提取位置页面,下列那条不对:()

A、索引页上按L2键

B、随时可 在CDU上按起始基准键

C、识别页上按R6键

D、起飞基准页面上按L4键

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