What is the difference between oil and coal?
What is the difference between oil and coal?
This time, I will introduce the differences between oil and coal as basic knowledge. Energy can be classified into two categories: primary energy and secondary energy. Primary energy refers to energy that is supplied in its unprocessed state. On the other hand, secondary energy refers to energy obtained by converting or processing primary energy. Oil and coal are included in fossil fuels, which are a type of primary energy. Please take a look, and if you have any questions, feel free to consult with us at Equal!
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