分析浅冷装置轻烃收率低的原因?

题型:问答题 简答题

问题:

分析浅冷装置轻烃收率低的原因?

考点:轻烃装置操作工轻烃装置操作(技师)轻烃装置操作(技师)题库
题型:问答题 简答题

下列各组词语中加点字的读音,有错误的一项是(   )

A.丰稔(rěn)轻飏(yáng)流憩(qì)西畴(chóu)

B.翼轸(zhěn)襜帷(zhān)潦水(liáo)睇眄(miǎn)

C.夭阏(è)泠然(líng)涸辙(hé)懿范(yì)

D.险衅(xìn)拔擢(zhuó)优渥(wò)捧袂(mèi)

题型:问答题 简答题

下列哪一个HLA功能区在人类中具有相同的抗原性()

A.胞浆区

B.HLA穿膜区

C.肽结合区

D.Ig样区

E.以上均不是

题型:问答题 简答题

阅读理解

     Compared to people with bad attitudes,  people who are cheerful and relaxed are less likely to suffer

from colds,  according to a new study."It's possible that being upbeat helps the body fight illnesses,  "

says Sheldon Cohen,  the study's lead researcher from Carnegie Mellon University (CMU) in Pittsburgh.

     In a previous study,  Cohen and his colleagues put coldcausing viruses into the noses of 334 healthy

adults.People who tended to be cheerful and lively were least likely to develop sniffles,  coughs,  and

other cold symptoms.People who showed positive feelings were also less likely to mention symptoms to

their doctors,  even when medical tests detected those symptoms.

     Those findings were interesting,  but they didn't prove that a person's attitude affects whether he or

she gets sick.Instead,  it was still possible that a person's underlying personality is what matters.Evidence

suggests,  for instance,  that certain people are naturally more likely to be outgoing and optimistic,  with

high selfesteem and a sense of control over life.This would mean that who we are,  not how we feel,  

ultimately decides our chances of catching colds.

     To figure out which mattered more (personality or emotions),  the CMU team interviewed 193

healthy adults.The researchers talked to each person over the phone every evening for 2 weeks.At the

end of the interviewing period,  people got nose drops that contained either cold or flu viruses.Then,  

each person stayed in an isolated room for 5 or 6 days.The results showed that everyone in the study

was equally likely to get infected.Their symptoms,  however,  differed depending on the types of emotions

that they had reported over the previous 2 weeks.Among those who reported good moods and had been

infected with the flu virus,  for example,28 percent developed coughs and stuffy noses.On the other

hand,  those symptoms struck 41 percent of people who had been less upbeat.

1. What would be the best title for the passage?

A. Smiles Turn away Colds

B. An Interesting Way to Beat Colds

C. Be Outgoing and Optimistic to Fight Colds

D. What Matters More,  Personality or Emotions?

2. In the previous study,  people who showed positive feelings______.

A. didn't catch colds as often

B. developed cold symptoms more slowly

C. were less likely to have cold symptoms detected

D. were less likely to feel cold symptoms

3. What mainly decides our chances of catching colds according to the new study?

A. Personality.  

B. Selfesteem.

C. Emotions.  

D. Attitudes.

4. The underlined word "symptoms" probably means________.

A. something that causes cold

B. something that results in cold

C. signs that something exists,  especially something bad

D. changes in your body or mind that show that you are not healthy

题型:问答题 简答题

某种油品的扫线方式是依据油品的()决定的.

A.燃点 

B.闪点 

C.凝固点 

D.冰点

题型:问答题 简答题

第一次工业革命丰富了英国伦敦棉纺织业老板理查德的生活,在当时他可以  (   )

A.在电灯下分析企业经济数据

B.驾驶汽车欣赏伦敦的夜景

C.搭乘火车外出考察

D.使用有线电话谈生意

更多题库