在208 K、100 kPa时,已知: 2H2O(g)=O2(g)+2H2(g)

题型:选择题

问题:

在208 K、100 kPa时,已知:

2H2O(g)=O2(g)+2H2(g)             ΔH1

Cl2(g)+H2(g)=2HCl(g)                           ΔH2

2Cl2(g)+2H2O(g)=4HCl(g)+O2(g) ΔH3

则ΔH3与ΔH1和ΔH2间的关系正确的是(  )

A.ΔH3=ΔH1+2ΔH2    

B.ΔH3=ΔH1+ΔH2

C.ΔH3=ΔH1-2ΔH2

D.ΔH3=ΔH1-ΔH2

考点:焓变、反应热中和热燃烧热
题型:选择题

以下哪项不是正确培养积极形态的方法?()

A.当心里觉得有太多压力时选择适当场合大声歌唱、大声叫喊

B.经常重复回忆客户投诉自己的经历,提醒自己注意

C.经常自我安慰生活中遇到不知道的事情是很正常的

D.我对自己不过分苛求,对他人也不会期望过高

题型:选择题

从主动脉升部发出的分支是()

A.右锁骨下动脉

B.左锁骨下动脉

C.肋间后动脉

D.头臂干

E.冠状动脉

题型:选择题

按照本文,下列说法正确的是:

A.语言文字是人类的文化能力

B.饮食男女之事与文化无关

C.动物适应环境往往出于本能

D.了解文化也就能了解社会

题型:选择题

As we have seen, the focus of medical care in our society has been shifting from curing disease to preventing disease—especially in terms of changing our many unhealthy behaviors, such as poor eating habits, smoking, and failure to exercise. The line of thought involved in this shift can be pursued further. Imagine a person who is about the right weight, but does not eat very nutritious (有营养的) foods, who feels OK but exercises only occasionally, who goes to work every day, but is not an outstanding worker, who drinks a few beers at home most nights but does not drive while drunk, and who has no chest pains or abnormal blood counts, but sleeps a lot and often feels tired. This person is not ill. He may not even be at risk for any particular disease. But we can imagine that this person could be a lot healthier.

The field of medicine has not traditionally distinguished between someone who is merely “not ill” and someone who is in excellent health and pays attention to the body’s special needs. Both types have simply been called “well”. In recent years, however, some health specialists have begun to apply the terms “well” and “wellness” only to those who are actively striving to maintain and improve their health. People who are well are concerned with nutrition and exercise, and they make a point of monitoring their body’s condition. Most important, perhaps, people who are well take active responsibility for all matters related to their health. Even people who have a physical disease or handicap (缺陷) may be “well” in this new sense, if they make an effort to maintain the best possible health they can in the face of their physical limitations. “Wellness” may perhaps best be viewed not as a state that people can achieve, but as an ideal that people can strive for. People who are well are likely to be better able to resist disease and to fight disease when it strikes. And by focusing attention on healthy ways of living, the concept of wellness can have a beneficial impact on the ways in which people face the challenges of daily life.

小题1:Today medical care is placing more stress on ________.

A.keeping people in a healthy physical condition

B.monitoring patients’ body functions

C.removing people’s bad living habits

D.ensuring people’s psychological well-being小题2:In the first paragraph, people are reminded that ________.

A.good health is more than not being ill

B.drinking, even if not to excess, could be harmful

C.regular health checks are essential to keeping fit

D.prevention is more difficult than cure小题3:Traditionally, a person is considered “well” if he ________.

A.does not have any unhealthy living habits

B.does not have any physical handicaps

C.is able to handle his daily routines

D.is free from any kind of disease小题4:According to the author, the true meaning of “wellness” is for people ________.

A.to best satisfy their body’s special needs

B.to strive to maintain the best possible health

C.to meet the strictest standards of bodily health

D.to keep a proper balance between work and leisure小题5:According to what the author advocates, which of the following groups of people would be considered healthy?

A.People who have strong muscles as well as slim figures.

B.People who are not presently experiencing any symptoms of disease.

C.People who try to be as possible, regardless of their limitations.

D.People who can recover from illness even without seeking medical care.

题型:选择题

罗马帝国的版图基本确定下来,成为地跨欧亚非三洲的大帝国的时间在[ ]

A.公元前2世纪

B.公元2世纪

C.公元前1世纪

D.公元1世纪

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