焊接接头侧面工作边在1米范围内不允许有凸起,允许有少量凹进,最大凹进量不大于()毫米

题型:单项选择题

问题:

焊接接头侧面工作边在1米范围内不允许有凸起,允许有少量凹进,最大凹进量不大于()毫米。

A.0.1

B.0.2

C.0.3

考点:高铁岗位考试高铁线路工高铁线路工题库
题型:单项选择题

下列关于心脏传导系统的描述正确的有()

A.心脏传导系统包括窦房结、结间束、房室结、希氏束和左、右束支及浦肯野纤维等

B.窦房结是心脏的正常起搏点

C.窦房结和房室结间由结间束连接

D.窦房结是心脏的正常起搏点

E.希氏束,又称房室束,起自窦房结前端

题型:单项选择题
选词完成句子。每题1分,共10分 从所给的词或词组中挑选出10个,并用其适当形式填入句中。
 be concerned about       be sentenced to death   on purpose   as if
because of   make use of    such as    ever since   equal   ignore
graduate    actually     reliable        disagree      rescue    
小题1:He is a/an ___________ man. You can turn to him whenever you are in trouble.
小题2: There is no doubt that the man who murdered his wife and children _________________________.
小题3:Everybody outside is carrying an umbrella _______________ it is raining.
小题4:Animals __________rabbits and deer continue to be active all winter,finding food wherever they can .
小题5:___________then, he never stopped searching for new and better ways to do things.
小题6:He has been working in that factory after his _______________ from the technical school.
小题7:He pretended to be asleep but________, he was awake.
小题8:To attract his attention, she broke a glass ____________.
小题9:Not all men are _________ in ability. That is to say, some men are able while others may not be so able.
小题10: My mother is devoted to our family and she ______________our family no matter where she is.
题型:单项选择题

氨合成催化剂床为什么要分段?

题型:单项选择题

用树型结构表示实体类型及实体间联系的数据模型称为【 】;用二维表格表示实体类型及实体间联系的数据模型称为【 】。

题型:单项选择题

在软件开发模型中,下列哪一个模型主要用于支持面向对象开发过程。()

A.喷泉模型

B.瀑布模型

C.增量模型

D.螺旋模型

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