搜题请搜索小程序“爱下问搜题”
问题 填空题

加氢反应器（R-2201）在控制床层出口温度不小于（）℃的前提下，尽量控制较低的入口温度，但为达到催化剂烯烃饱和起始温度，入口温度应控制不小于（）℃。

答案

参考答案：340；220

单项选择题

当初步设计的设备清单不完备，或仅有成套设备的重量时，可采用( )编制概算。

A．预算单价法
B．扩大单价法
C．概算指标法
D．概算定额法
查看答案
单项选择题

Losing a job or not being able to find one almost always brings unwelcome changes. If you’’ve lost a job, the first feeling is often one of shock. On top of the loss of income, many people find the whole routine of their life is shattered, their contact with other people reduced, their ambitions halted and their identity as a worker removed.There may be good feelings too — it’’s nice to be able to lie in bed in the morning, to spend more time with children, or to have more time to think — a better job may be just around the corner. But, unless a better job does turn up, chances are the days start getting longer and the time becomes harder to fill. Many people pass through periods of difficulty in sleeping and eating. They feel irritable and depressed, often isolated and lonely.Despite all these problems, unemployment can be a chance for a fresh start. You can discover that it provides an opportunity to sort out or rethink what you want from life and how best you can get it. You can use the time to plan how to find a new job, learn a new skill, develop your hobbies, see if you can run your own business, do some voluntary work in your community or meet new people. It’’s up to you.

The unemployed become finally disillusioned when they________.

A．have nothing more to think about

B．are unable to improve their position

C．get tired of playing with their children

D．can no longer lie in bed in the morning
查看答案