第18题: [单项选择]10W功率可由dBm表示为（）。 A. 10dBm B. 20dBm C. 30dBm D. 40dBm 参考答案:D
第19题: [多项选择]中国城市化(urbanization)将会充分释放潜在内需(domestic demand)。一些经济学家指出，在中国几乎所有的发展中城市都面临着城市化的进程。这使得许多人的生活水平有所提高，也为人们提供更多的就业机会。随着越来越多的人向城市迁徙，住房及城市基础设施建设(infrastructure construction)，包括水源等能源的供应将会成为城市发展的焦点问题。商品与服务的自由、快速流通是城市化社会的一项基本特征。逐渐扩张的城市需要更多的零售店来满足消费者的需求。 参考答案:China’s urbanization will release the full potential of domestic demand. Some economists point out that urbanization is a process that is occurring in nearly every developing city in the country. It will lead to a better quality of life for many people, and provide individuals with more job opportunities. The construction of housing and city infrastructure, in cluding water and energy supplies, will be a focal point of urban development as more people migrate to cities. Urbanization means better access to educational and medical resources in the city. But it also predicts less use of personal vehicles and more use of public transportation. The fast, free flow of goods and services is a basic trait of an urbanized society. Ex-panding cities require more retail outlets to serve customers.
