| environ. |
petroleum consumption Petroleum belongs to non-renewable energy sources; it is a complex substance derived from the carbonized remains of trees, ferns, mosses, and other types of vegetable matter. The principal chemical constituents of oil are carbon, hydrogen, and sulphur. The various fuels made from crude oil are jet fuel, gasoline, kerosine, diesel fuel, and heavy fuel oils. Major oil consumption is in the following areas: transportation, residential-commercial, industrial and for generating electric power (石油属于非可再生能源，它是一种复杂的物质，来源于炭化后的树木、蕨类、藓类和其它类型的蔬菜。主要化学成分是碳、氢、油和硫磺。石油可以被提炼成各种燃料：原油、汽油、喷气燃料、柴油、重燃料油。主要的石油消费是在以下几个方面：运输工业和发电。) |
