Enlisted personnel are identified by way of their various 'E' grades ranging from E-1 to E-9. For those service branches recognizing a Warrant Officer rank, 'W' grades range from W-1 to W-5. Likewise Officers are scaled from O-1 to O-10.
China has quite a collection of natural bridges, including one that experts say has the longest span of any natural bridge in the world. The Fairy Bridge (Xianren Qiao), in southwestern China's Guangxi Zhuang Autonomous Region near the border with Vietnam, has a 400-foot span.
1: DanyangâKunshan Grand Bridge. DanyangâKunshan Grand Bridge is also longest bridge of the world that placed on 1st rank in this list of longest bridges of the world as this bridge is also located on the railway line between Shangai and Nanjing as it also crossed over many lakes, canals as well as rivers.