What is characteristic of both oil shale and oil sand?
A) They are usable only for aviation fuel.
B) They contain large supplies of heavy oils.
C) They constitute a small but cheap supply of crude oil.
D) They are principal sources of conventional crude oil.
Correct Answer:
Verified
Q18: What is the net energy ratio of
Q19: What has the highest net energy ratio
Q20: What is net energy?
A) It is the total
Q21: Which of the following is/are liquefied petroleum
Q22: How does natural gas compare to coal?
A) Natural
Q24: What percentage of the world's electricity is
Q25: In how many years will global coal
Q26: Which of the following is NOT contained
Q27: Which list shows the stages of coal
Q28: Which pair of countries has the largest
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