Photovoltaic electricity costs are __________ coal or nuclear-powered electricity.
A) substantially less than
B) unlikely to become as cheap as
C) incomparably more expensive than
D) likely to be cheaper in the near future than
E) the same as
Correct Answer:
Verified
Q21: Manure or dung makes a good fuel
Q22: Active solar energy systems involve
A) Large volumes
Q23: Amorphous silicon collectors are currently being used
Q24: Where does wind energy have the greatest
Q25: Photovoltaic cells work because solar energy striking
Q27: In the United States and Canada, the
Q28: The most effective technology developed so far
Q29: Since the 1920s, hydropower production has
A) Risen,
Q30: In the United States, windmills played a
Q31: Burning methane from dung
A) Is more efficient
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