下列气体中不属于污染空气的三大有害气体的是 ( ) A.二氧化硫 B.二氧化碳

题型:选择题

问题:

下列气体中不属于污染空气的三大有害气体的是 (    )

A.二氧化硫

B.二氧化碳

C.二氧化氮

D.一氧化碳

考点:吸入空气与呼出气体的比较空气中氧气含量的测定氮气的性质和用途空气的检验
题型:选择题

下列哪项不属于CT机硬件结构范畴()

A.扫描机架

B.扫描检查床

C.X线发生系统

D.多幅照相机

E.自动洗片机

题型:选择题

临时用电工程检查的内容包括()。

A.架空线路

B.监控线路

C.电缆线路

D.电气防护

E.配电线路

题型:选择题

某6个月小儿,低热1天伴咳喘,吃奶时有呛咳,哭吵时唇周轻度发绀。查体:体温38℃,气促,呼吸50次/分,规则。精神及面色尚可,呼气相延长,两肺呼吸音对称,有较多哮鸣音,心率160次/分,心音强,肝肋下2.5cm。

入院第5天,出现极度烦躁不安,神萎,气促加重伴口唇发绀,心率增至180次/分,左侧肺部啰音增多,右侧叩诊呈鼓音伴呼吸音减弱,应首先考虑下列哪种情况()。

A.心力衰竭

B.呼吸衰竭

C.中毒性脑病

D.气胸

E.呼吸肌疲劳

F.胸腔积液

题型:选择题

中场休息不得超过10分钟。

题型: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.

Unemployment almost always brings changes that are________.

A.unpleasant

B.unsuitable

C.untenable

D.unworthy

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