氧气瓶和乙炔瓶中的气体须用胶管输送到焊炬和割炬中。下列有关胶管的说法不正确的是（）。- A氧气胶管为红色，允许工作压力为1.5MPa
- B乙炔胶管为红色，允许工作压力为0.5MPa
- C通常，氧气管的内径为8mm
- D乙炔管的内径为10mm
- E焊、割炬用胶管禁止接触油污及漏气，并且严禁互换使用
相关标签： 氧气管
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
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。
A．输送潮湿氧气的管道则应有不小于0.003的坡度,并坡向凝结水收集器;B．室内安装的氧气管道位置要低于易爆管(如乙炔管),高于非易爆管。C．严禁把氧气管道与电缆安装在同一沟内;D．氧气管道安装时,从水平干管引出分支管时,应从干管的顶部或侧面开三通接出。管道除与设备、阀件连接采用法兰及螺纹连接外,其他均应采用螺纹连接(正确的是焊接)。E．氧气管道适当的位置标明“氧气”、“禁油”等字样。
题型：单选题
架空煤气管道与其他管道共架敷设时的注意事项，下列说法错误的是（）。
A.煤气管道与水管、热力管、燃油管、不燃气体管在同一支柱或找桥上敷设，其上下敷设的垂直净距不小于250mm
B.为便于操作、检修和抽堵盲板，重油管和氧气管可以敷设在同一侧
C.其他管道架设在管径大于或等于1200mm的煤气管道上时，管道上面预留600mm的通行道
D.其他管道的托架均应焊在煤气管道的加固圈上，加固圈的长度可根据荷载的大小选定，一般为（1/6～1）管道周长，但不小于200mm