题目

乙炔一般不与其他管线同沟敷设,但可与同一使用目的的氧气管平行敷设,间隔最少为(),且地沟内应填满黄砂。

A、250mm

B、500mm

C、400mm

D、300mm。

相关标签: 氧气管  

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某机电安装公司承担了某钢厂新厂区油罐组焊,燃气、氧气管道安装施工,设计要求焊缝进行射线无损探伤检查。强度试验采用气压试验方法。
该公司在编制施工方案时,对油罐组焊、管道焊接方案采用综合评价法进行了技术经济比较,选定了最优方案。
管道焊后经射线探伤发现,焊接合格率偏低。项目部组织人员按质量预控的施工因素进行了分析,经查验,工艺文件已按程序审批,并进行了技术交底。但焊接记录中有部分焊材代用,部分焊机不符合要求,焊缝外观检查有漏检。根据分析结果,找出了失控原因,经整改后焊接合格率得到了提高。
项目部根据现场危险源辨识,编制了高处作业、机械操作、起重吊装、临时用电安全技术措施。
未履行书面告知的处罚措施。

A warm-hearted (热心的) nurse on her first day's work went near to a patient (病人). He has come to London as a tourist. She asked him if she could do something for him, but he only waved (摇) his hand and said something she could not understand. With a smile she asked him again and he just kept saying the same word but in a very much lower voice (声音) before closing his eyes. She ran to the doctor and repeated(重复) to him the sounds she had heard: "My dear girl," said the doctor after listening carefully to what she repeated, he was saying, " You are standing on I oxygen pipe (氧气管)!"
In the story, the nurse and the patient ______.
A.speak the same language
B.speak different languages
C.can't hear each other

氧气管弯头宜采用弯曲半径大于()D光滑弯头,不宜采用焊接弯头。󰀀

A、3.5

B、4.0

C、5.0

D、6.0

下列关于氧气管道安全控制措施的说法,错误的是()。
A.架空氧气管道与明火地点等之间的最小净距不应小于10mB.氧气管道与乙炔管道共架敷设时,应设在乙炔管道的下方C.氧气管道与油质管道同沟敷设时,应设在乙炔管道的下方D.氧气管道上的法兰连接和螺纹连接处,应用金属导线跨接,跨接电阻应小于0.03Ω

气焊与气割氧气胶管为()色,严禁将氧气管接在焊、割炬的乙炔气进口上使用。

A、红

B、蓝

C、紫

D、白

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