Motorcycle is a kind of two-wheeled or three-wheeled vehicle driven by gasoline engine and controlled by handlebar, which is light, flexible and fast. Widely used in patrol, passenger and freight transportation, etc. It is also used as sports equipment. Generally speaking, motorcycles are divided into street cars, road racing cars, cross-country motorcycles, cruise cars, station wagons and so on.
topography
Changchun is a relatively flat terrain, which is the transition zone between the eastern mountainous area and the western Songliao Plain. It is bounded by the line from Fufeng Town to Shanghewan, with hills and low mountains in the southeast, with an altitude of 200-438+0 m, the highest peak is Laodaodong Mountain in the southeast of Shuangyang District, with an altitude of 765,438+065,438+0 m, and the northwest is a alluvial and diluvial platform, which belongs to the undulating terrain of high plains, with an altitude of160-200 m.
The line from Nong 'an to Dehui to Yushu enters the Songnen Plain, with an altitude of 137- 160m, a relative height difference of 5- 10m, and the terrain slope is mostly below 5. The lowest point is Lalin Valley at the junction of Yushu City and Songyuan City, with an altitude of137.5 m. The coverage rate of low mountains and hills in the city is 2.84%, that of high plains (platform) is 37.5%, and that of valley plain is 59.66%.