Responsible for the construction of many roads and bridges, including the Whitehurst Freeway, the Tidal Basin Bridge, and an extension to the Baltimore-Washington Parkway.
/usr/include/sys/signal.h
locate命令用于查找文件，它比find命令的搜索速度快，它需要一个数据库，这个数据库由每天的例行工作（crontab）程序来建立。当我们建立好这个数据库后，就可以方便地来搜寻所需文件了。
反应胃酸高低
A contemporary example of a modern-day inventor is Lonnie George Johnson, an engineer. Johnson invented the Super Soaker water gun, which was the top-selling toy in the United States in 1991 and 1992. In 1980 Johnson formed his own law firm and licensed the Super Soaker water gun to Larami Corporation. Two years later the Super Soaker generated over 0 million in retail sales and became the best selling toy in America. Larami Corporation was eventually purchased by Hasbro, the second largest toy manufacturer in the world. Over the years, Super Soaker sales have totaled close to one billion dollars. Johnson reinvested a majority of his earnings from the Super Soaker into research and development for his energy technology companies – 'It's who I am, it's what I do.'[2] Currently,[when?] Johnson holds over 80 patents, with over 20 more pending, and is the author of several publications on spacecraft power systems.[3][4]
