The scientific consensus concerning fusion power reactors is that
A) the first commercial fusion reactors are already under construction and will be ready for use within ten years.
B) such reactors are already a source of commercially feasible electric power.
C) such reactors could be commercially feasible, but not until the middle of this century.
D) according to present scientific knowledge, it is impossible to build such reactors.
E) such reactors could be built but they will never be a commercially feasible source of electricity.
C
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a. 71 b. 52 c. 67 d. 191 e. 208
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Fill in the blank(s) with the appropriate word(s).
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No known white dwarf has a mass greater than the Chandrasekhar limit
a. True b. False Indicate whether the statement is true or false