European legislation governing the maximum permissible levels of various emissions has been tightened in several stages over the years. The percentage reduction figures refer to 1990 as base year. The figures for hydrocarbons (HC) and nitrogen oxides (NO
Therefore, a simple way to decrease CO_2 emissions from the transport sector in Sweden would be the replacement of gasoline by Diesel passenger cars, which emit less CO_2. The combined effects of probable changes in Diesel and gasoline future fuel consumption, new passenger car sales and ...
Based on this, the concept of average travel time per kilometer was proposed, and SPSS regression analysis was used to establish prediction models of the exponential travel time that could be applied to trucks and passenger cars. The accuracies of the prediction models and their applicability ...
The graphs show the percentage of people who use public transport and people who only use private cars in five cities in Australia from 2000 to 2010. 社会问题 观点类 Everyone should become a vegetarian because people do not need eat meat to have a healthy diet. To what extent do you agree...
European legislation governing the maximum permissible levels of various emissions has been tightened in several stages over the years. The percentage reduction figures refer to 1990 as base year. The figures for hydrocarbons (HC) and nitrogen oxides (NO