问题 问答题 简答题

密闭输油加压输送流程如何切换为压力越站流程?

答案

参考答案:

(1)确认全线各站具备启泵条件,减压站满足启动条件,减压站下游相邻站进站调节阀处于运行状态。(2)控制中心发出启动减压站的指令,通知上下游站。(3)根据工艺条件设定减压阀调节值。(4)打开进、出站阀门及减压阀的截断阀,减压阀投入运行。(5)泄压装置投入运行。(6)伞面检查,汇报控制中心。

阅读理解

An American writer, Mr Green once(曾经) said, “Everybody talks about the weather, but nobody does anything about it.” It is true that everybody talks about the weather. Many people begin their talks by saying, “Isn’t it a nice day?” “Do you think it will rain?” “I think it’s going to snow.”

Many people think they can tell what the weather is going to be like. But sometimes they don’t agree with each other. One man may say, “Do you see how cloudy it is in the east? It’s going to rain tomorrow.” Another man will say, “No, it’s going to be fine tomorrow.”

People often look for the weather they want. When a farmer needs water, he looks for something to tell him it’s going to rain, and he doesn’t look for anything else. When friends have a picnic, they hope the weather is going to be fine and they can sit eating their lunch under the blue sky.

Almost everyone listens to what the weatherman says. But he doesn’t always tell us what we want, and sometimes he makes a mistake. Still, he is right most of the time.

小题1:People often begin their talk by ______.

A.saying hello to each other

B.Drinking tea

C.Looking for good weather

D.saying something about the weather小题2:People sometimes have different ideas about ______.

A.what the weather is going to be like

B.what we should do about the weather

C.how to begin a talk

D.how to have fine weather小题3: ______, they always hope the weather is going to be fine.

A.When people talk about weather

B.When people stay at home

C.When the farmers need water

D.When people have a picnic小题4:According to the passage, which is NOT RIGHT?

A.Almost everyone listens to what the weatherman says.

B.People often look for the weather they want.

C.The weatherman never makes a mistake.

D.Many people begin their talks by talking about the weather.小题5:What is the best title for the passage?

A.Weather Report

B.Story About a Weatherman

C.About Weather

D.How to Begin a Talk

单项选择题