In the American society of automotive engineers standards SAEJ 687 c for automobile is defined as: power driven by itself, with a driving device, can in a fixed orbit outside the road or on regional transport passenger and cargo or vehicle traction vehicles. Cars are divided into bicycles and trains according to the overall structure. Cycling is a basic form. 4 x 2, 6 x 4, 4 x 4 and 6 x 6 are used to represent the driving characteristics. The previous number represents the total number of wheels (double tire and still count a wheel), and the latter number indicates the number of driving wheels. If all wheels are driven wheels are called all-wheel drive vehicles. The train is made up of a tractor or a bicycle trailer or semi-trailer. Car generally can be divided into the following categories, according to the use cars, buses, freight cars (commonly known as the truck), off-road vehicle, traction motor, dump truck, special vehicles, semi-trailer and special semi-trailer. Commodity market refers to a fixed location, facilities, there are several operators admission management, tax respectively, the market management is responsible for the management, property management, centralized, publicly traded for tangible commodity trading places. This concept has three meanings: first, commodity market is a commodity trading place composed of transaction subject, transaction object, transaction carrier and other elements. Second, the commodity market is the place to provide services, which is a trading venue for producers and consumers to provide a certain quality of service. Third, the commodity market is the place to provide sensory experience. Therefore, commodity market is the product of commodity economy development to a certain stage. If you've got already entered the men there's still enough time to improve your earning potential by seeking higher education. faculties and universities today will provide more choices for college kids desperate to get back to college than in the past. in reality there exists a tendency to are seeing an ever-increasing selection of faculty students that are classified as non-traditional students. we tend to are seeing several more adults returning for that education they did not obtain the primary time around, that's nice news. It conjointly implies that additional and many choices have grown to be on the market within the dead of night and so on the weekends for all those adults. Of course, for ordinary people, the yield is 3.9% or 4%, not much. But for yu 'e bao, which has 1.56 trillion yuan, the difference is significant.