移动端

  • 题王微信公众号

    题王微信公众号

    微信搜“题王网”真题密题、最新资讯、考试攻略、轻松拿下考试

单选题

对有无损检测要求的角接接头、T形接头,不能进行( )或超声检测。

发布日期:2021-03-18

对有无损检测要求的角接接头、T形接头,不能进行( )或超声检测。
A

射线

B

磁粉

C

光谱

D

表面

试题解析

角接接头

角接接头是指两件端部构成大于或等于30。、小于或等于135。夹角的接头称为角接接头。这种接头受力状况不太好,常用于不重要的结构中。根据焊件的厚度不同,其坡口可分为I形、带钝边J形、带钝边双单边V形及K形等形式。

中文名
角接接头
定义
指两件端部构成大于或等于30。、小于或等于135时夹角的接头

无损检测

《无损检测》创刊于1979年,月刊,是由中国科学技术协会主管,中国机械工程学会、上海材料研究所主办应用类技术期刊。据中国知网2019年7月期刊官网显示,《无损检测》第十届编辑委员会拥有委员45人,设名誉主编1人、主编1人、主任委员1人、副主编2人、副主任委员6人。据2019年7月29日中国知网显示,《无损检测》总被下载855850次,总被引32443次,出版文献共7796篇,(2018版)复合影响因子为0.725,(2018版)综合影响因子为0.555。据2019年7月29日万方数据知识服务平台显示,《无损检测》载文量为4007篇,基金论文量为1002篇,被引量为18578次,下载量为94422次;2015年影响因子为0.55。

中文名
无损检测
语种
中文
主管单位
中国科学技术协会
编辑单位
《无损检测》编辑部
出版周期
月刊
国际刊号
1000-6656
现任主编
耿荣生
编辑部地址
上海市邯郸路99号
外文名
Nondestructive Testing
类别
仪器仪表工业
主办单位
中国机械工程学会、上海材料研究所
创刊时间
1979年
国内刊号
31-1335/TG
邮发代号
4-237
属性
中文核心期刊、Pж(AJ)

接头

在通信术语中,接头是安装在电缆与电缆之间,具有一定绝缘和密封性能,使得两根及以上电缆连续运行的设备。在基因工程技术中,使两个DNA分子或一个DNA分子的两端经酶切可以配对再经连接酶共价连接的序列。 现常用人工合成的六聚体接头(含有一特定酶的切口),也可多个六聚体接头连在一起,形成多聚接头(polylinker)。

中文名
接头
注音
ㄐㄧㄝ ㄊㄡˊ
出处
外文名
linker
释义
使两个物体接起来,多指条状物

题王网让考试变得更简单

扫码关注题王,更多免费功能准备上线!

此试题出现在

二级建造师

机电工程管理与实务

去刷题
热门试题热门资讯 相关试题

Directions: In this part, there is 1 passage followed with 5 statements. Read the passage and decide which of the statements at the end of the passage are true and which are false. Remember to write the answers on the Answer Sheet.  Questions 1 to 5 are based on the following passage.  Enya was born in 1961, 17 May, and spent her childhood in Gweedore. There are nine brothers and sisters in the family, four other girls and four boys. All the family have won many competitions and are famous in national traditional music circles.  Whilst at school, Enya studied the piano and classical music. Three of her brothers and sisters formed, together with their uncles, a folk music group (at first with a certain American feel and then more purely Irish, though influenced by jazz and by others such as Pentangle). The group was named Clannad, a contraction of “the family from Gweedore” in Irish. In 1980, at the suggestion of their manager, Fachtna O’Kelly, Enya became a member of the group. She performed with Clannad on many occasions, until, in February 1982, on completing a European tour, she left the group, no one really knowing why.  It was also Fachtna O’Kelly who suggested to Enya after she left Clannad, that she devoted herself to composing for films. And so, in 1984, she approached her first important task. Roma Ryan had sent a cassette of Enya to film producer David Puttnam. Puttnam asked her to compose dreamy and romantic music with a sixties feel for the feature film The Frog Prince.  Having a studio at her disposal, Enya worked almost always at home with the Roland Juno 60 synthesizer or the Kurzweil sampler, and then added piano and voice. Nicky Ryan recorded everything and helped to put the compositions into their final form.  Enya’s first record subsequently climbed to number one in the Irish charts, which started the commercial rise of Enya. She collaborated with the singer Sinéad O’Connor reciting a short text on “Never Get Old” from her album The Lion And The Cobra.  She signed with an important multinational, and had a resounding success with her second album Watermark, which has passed 10 million sales worldwide, and has gone platinum in 14 different countries, helped by the single “Orinoco Flow”, a No 1 hit in Britain. Then she repeated her world success with Shepherd Moons, which spent an amazing 199 weeks on the Billboard charts in the USA and has sold over 11 million copies.  Statements:  1.All the family are well known in national traditional music circles.  2.Three of Enya’s brothers and sisters with their uncles formed a purely American folk music group at first.  3.It was Fachtna O’Kelly who suggested Enya join Clannad and then quit it.  4.Enya’s second album Watermark has been translated into different versions in 14 counties.  5.The single “Orinoco Flow” from Watermarkspent an amazing 199 weeks on the Billboard charts.

Bow ()full to starboard.

叙述相干探测器的基本原理。

半纵向调查方法是指()

信息技术进出口有限责任公司向澳大利亚A&AT公司发电:“确认售与你方计算机500台,每台CIF墨尔本600美元,5月20日交货,发生争议在英国伦敦国际仲裁。” 澳大利亚A&AT公司复电如下:“确认你方来电和我方购买你方计算机500台,条件按你方电报规定,请提供合适的包装。” 后来,信息产业进出口有限责任公司没有按期交货,双方发生争议。 问:澳大利亚A&;AT公司复电构成下列哪种情形?()

根据询问内容不同,问句可分为哪几种类型?

2016年1月29日召开的中共中央政治局会议,首次公开提出增强()、()、()、()的“四个意识”。

下列表述错误的是()

没有咬合关系的颌位是(  )。

消防战斗服是保护消防指战员免受()以及其他危险物质伤害的保护装备。