阿摩線上測驗
47. Nitrogen fixation
(A) is used to manufacture ammonia
(B) transforms nitrogen to other nitrogen-containing compounds
(C) is used to recover sulfur from underground deposits
(D) is used to produce nitric acid
(E) none of
these
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統計： A(0), B(11), C(2), D(0), E(0) #2740275
統計： A(0), B(11), C(2), D(0), E(0) #2740275
