对比磁盘,磁带有哪些优势()。A、每GB成本略微低一些 B、能够保存相当数量的数据 C、

题型:单项选择题

问题:

对比磁盘,磁带有哪些优势()。

A、每GB成本略微低一些

B、能够保存相当数量的数据

C、拥有更轻便的介质

D、以上所有

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题型:单项选择题

患者男性,72岁,持续胸痛伴呕吐,大汗6小时,血压80/50mmHg,窦性心律,心率45bpm,心电图示下壁和右室壁梗死。

以下哪项为心梗亚急性期的改变()

A.ST段明显抬高,弓背向上

B.出现病理性Q波,R波降低

C.T波呈V形倒置,两支对称

D.ST段逐渐回到基线水平,T波变为平坦或倒置

E.出现异常高大,两支不对称的T波

题型:单项选择题

8个月患儿入院,诊断急性支气管肺炎,血气分析结果:pH7.35,PaO26kPa(45mmHg),PaCO27.32kPa(55mmHg),血气分析诊断考虑为()。

A.低氧血症

B.高碳酸血症

C.Ⅰ型呼衰

D.Ⅱ型呼衰

E.失代偿性呼吸性酸中毒

题型:单项选择题
If you watch TV now, you _________the homework tonight.

A. don't finish
B. won't finish
C. didn't finish
D. aren't finish
题型:单项选择题

阅读理解。

     A quarrel at home may result in you falling ill. Don't laugh, it's true. Family matters including living habits

and even the way we speak have a big effect on our health, doctors say.

     Wang Xiaoyu, a Senior 2 girl from Xichang, Sichuan Province, fainted (晕倒) in class when she heard

her classmates quarrel at the top of their voices. Quarrels between her parents also put the girl into a coma.

It is because she is suffering from depression (抑郁症), caused by bad relations at home, doctors explained.

     "We don't get sick or stay well by ourselves," says Dr Robert Ferrer from the US. Ferrer shows that family

forces may explain up to a quarter of health problems, in his recent research. The genes you get from your

family may cause illness. If one of your parents has a heart attack, your risk of being affected may double.

But effects on health are not only written in our DNA.

     Unrelated people who live under the same roof also get similar problems. Diet, lifestyle and environment

affect our health, too. Ferrer's research also found that if teenagers feel they are ignored or unimportant at

home they are more likely to get sick.

     We may never fully understand all the effects that families have on our health. But just as individual (个别

的) problems can have effects on others, a small improvement can have big benefits, Ferrer said.

1. Which of the following can best explain why Wang Xiaoyu fainted in class? [ ]

A. Because her classmates often quarreled in class.

B. Because her parents used to quarrel.

C. Because of her depression caused by bad family relations.

D. Because her classmates shouted loudly at her.

2. According to Dr Ferrer, which of the following statements is TRUE? [ ]

A. We get sick or stay well by ourselves.

B. Only the genes we get from our family have a big effect on our health.

C. Our health has nothing to do with diet, lifestyle and environment.

D. Teenagers who are ignored at home get sick more easily than those who are not.

3. The underlined word "coma" in Paragraph2 probably means _____. [ ]

A. surprise

B. faint

C. tiredness

D. sadness

4. The best title for this passage is _____. [ ]

A. Family relations

B. The reasons why we get sick

C. Family-another cause to health

D. A research about health

题型:单项选择题

设计定位装置时,要分析计算定位误差.

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