在OSI参考模型的各层中，向用户提供可靠的端到端(End-to-End)服务，透明地

消防泵内无水时不应高速运转，检查时空转时间不得超过（）分钟。

脑外伤患者大声提问时可睁眼，疼痛刺激甲床时出现逃避反射或运动，与患者交谈时只发出哼哼声，言语无意义。该患者的Glasgow(GCS)评分为

A．11分

B．10分

C．9分

D．8分

E．7分

棉麻粉尘可引起（）

A.棉尘病

B.石棉肺

C.农民肺

D.外源性变应肺泡炎

E.云母尘肺

我国公共事业组织立法的特点？

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 nearly 75 percent using a simple optical illusion. But stripes, called chevrons, painted on the roads 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 to repeat Japan’s success. Starting next year, the foundation will paint chevrons and other patterns of stripes on selected roads around the country to test how well the patterns reduce highway crashes.

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 often 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 really are but also 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