青草青草久热精品观看,亚洲色大情网站WWW观看,一级特黄aa大片欧美,久久精品国产只有精品6,四虎成人精品无码永久在线,黄三级片产亚州17,日本高潮喷水流白浆在线观看

返回首頁

求一篇英語文章Transportation

來源:www.yupopomall.com???時間:2022-01-06 18:22???點擊:224??編輯:房棟???手機版

Transport or transportation is the movement of people and goods from one location to another. Transport is performed by various modes, such as air, rail, road, water, cable, pipeline and space. The field can be divided into infrastructure, vehicles, and operations.

Infrastructure consists of the fixed installations necessary for transport, and may be roads, railways, airways, waterways, canals and pipelines, and terminals such as airports, railway stations, bus stations, wharehouses, trucking terminals, refueling depots (including fueling docks and fuel stations) and seaports. Terminals may both be used for interchange of passengers and cargo, and for maintenance.

Vehicles traveling on these networks include vehicles of appropriate types such as automobiles, bicycles, buses, trains, trucks people, helocopters and aircraft. Operations deal with the way the vehicles are operated, and the procedures set for this purpose including financing, legalities and policies. In the transport industry, operations and ownership of infrastructure can be either public or private, depending on the country and mode.

Passenger transport may be public, where operators provide scheduled services, or private. Freight transport has become focused on containerization, although bulk transport is used for large volumes of durable items. Transport plays an important part in economic growth and globalization, but has a deteriorizing impact on the environment. While it is heavily subsidized by governments, good planning of transport is essential to make traffic flow, and restrain urban sprawl.

頂一下
(0)
0%
踩一下
(0)
0%