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问题 单项选择题 A3/A4型题

患儿，女，8个月。额顶部肿物怀疑脑脊膜膨出，全身麻醉气管内插管下行肿物切除术。导管选择ID4.5G带套囊，拔管后3小时逐渐发生呼吸困难、躁动，心率160次／分。经面罩吸氧、应用皮质激素、雾化吸入和镇痛治疗1小时后，情况逐渐好转。

考虑与气管导管的选择不当有关，最恰当的选择是（）。

A.ID3.5或4.0不带气囊导管

B.ID3.0不带气囊导管

C.ID4.5不带气囊导管

D.ID5.0带气囊导管

E.ID5.0不带气囊导管

答案

参考答案：A

单项选择题

Believe it or not，optical illusion can cut highway crashes.
Japan is a case in point．It has reduced automobile crashes on some roads by Rearly 75 percent using a simple optical illusion．Butst．ripes,called chevrons(人字形)，painted on ther rads make drivers think that they are driving faster than they really are，and thus drivers slow down.
Now the American Automobile Association Foundation for Traffic Safety in Washington D．C. is planning t。repeat Japan’s success．Starting next year，the foundati。n will paint cheyrons and。ther pattems of stripes on selected roads around the country to test how well the patterns reduce highway erashes．
Excessive(too great)speed plays a major role in as much as one fifth of all fatal traffic accidents， according to the foundation．To help reduce those accidents，the foundation will conduct its tests in areas where speed-related hazards(danger)are the greatest curves，exit slopes，traffic circles，and bridges．
Some studies suggest that straight，horizontal bars painted across roads can initially cut the average speed of drivers in half．However,traffic。ften returns to full speed within months as driVers become used to seeing the painted bars．
Chevrons，scientists say，not only give drivers the impression that they are driving faster than they reallv are but als0 make a lane appear to be narrower．The result is a longer lasting reduction in highway speed and the number of traffic accidents．

The American Automobile Association Foundation for Traffic Safety plans to______

A. try out the Japanese method in certain areas
B. change the road signs across the country
C. replace straight, horizontal bars with chevrons
D. repeat the Japanese road patterns
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如何看待民族工业短暂的春天
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