问题 问答题 简答题

车间管道布置设计的原则?

答案

参考答案:

(1)管道布置首先应满足生产需要和工艺设备的要求,便于安装、检修和操作管理。

(2)尽可能使管线最短、阀门最少。

(3)车间内管道一般采用明线敷设,安装费用低,检修安装方便,操作人员容易掌握管道的排列和操作。

(4)管径大的、常温的、支管少的、不长检修的和无腐蚀性介质的管道靠墙;管径小的,热力管道、常检修的支管多的和有腐蚀性介质管道靠外。

(5)管道穿过楼板、墙壁时,应预先留孔,穿过楼板或墙壁的管道,其法兰和焊口菌不得位于楼板或墙壁之中。

(6)易堵塞管道在阀门前接上水管或压缩空气

(7)管道应避免经过电动机或配电板的上空,以及两者的邻近。

(8)输送腐蚀性介质管道的法兰不得位于通道上空;与其它介质管道并列时,应保持一定距离,且略低。

(9)阀门和就地仪表的安装高度应满足操作和检查的方便。如阀门位置过高,可接长阀杆,使开关手轮或手柄位于适当操作的位置。

多项选择题
完形填空

读写任务(共1小题,满分25分)

阅读下面的短文,然后按照要求写一篇150词左右的英语短文

This is a very simple statement,yet not so easy to do—Keep your promises. I try to conduct my life in this manner. If you tell someone that you will do something for them,you can’t turn around at the 1ast minute and say, I didn’t do it because it wasn’t convenient. Keeping your promises is also a way to live your life with integrity. That's why it’s important to be aware of your  choice of words, and to live consciously. There were many times that I was not able to keep my promise for example of repaying some money to a friend or colleague, somewhere in the back of my mind I had always intended to repay the debt even if it was years in the future. But that is not a very good way of living. If you consistently live like this you will lose friends because l was not true to my word. It is heartbreaking for both sides.

Especial with Children you need to keep your promise. I get so disturbed when l hear parents trying to sooth a child’s temper and the parent says “I promise一" Later when the child remind the parent or guardian,it becomes clear that the parent had no real thought to keep the promise. The words were just said to placate the child. The parent, as I remember, thought that his or her child would just forget a11 about what was promised. But children have a great memory. Especially when they hear the words I PROMISE. Those words sound stronger than any other words in the English language to a child. We have been taught that those words have power and magic.

[写作内容]

1.以约30个词概括短文的内容要点;

2.以约120个词就“实践你的诺言”这个主题发表你的看法,包含以下的内容要点:

(1)叙述你或你的朋友守信或不守信的一次真实或虚构的经历及其结果。

(2)言而有信让你生机处处;

(3)言而无信使你处处碰壁。

[写作要求]

1、作文中可以使用自己的亲身经历或虚构的故事,也可以参照阅读材料的内容但不得直接引用原文中的句子;     2、标题自定

[评分标准]   概括准确,语言规范,内容合适,篇章连贯。