Which of the following has the highest carbon content?
A) anthracite
B) bitumine
C) lignite
D) peat
Correct Answer:
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Q60: The main ingredient of natural gas is
A)nitrous
Q61: Which of following energy sources is the
Q62: The burning of hydrogen produces
A)carbon.
B)water.
C)uranium.
D)helium.
Q63: The so-called "mountaintop removal" approach is used
Q64: _ saw the greatest increase in oil
Q66: Which region accounts for nearly half of
Q67: Which of the following countries produces roughly
Q68: The unit of energy used in common
Q69: How much of the total energy produced
Q70: _ is the ultimate clean fuel.
A)Carbon
B)Water
C)Uranium
D)Hydrogen
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