問題詳情
53. Which of the following was a problem facing the Biosphere 2 project?
(A) Lack of willing volunteers.
(B) Lack of sufficient funding.
(C) High levels of nitrogen.
(D) Imbalanced oxygen levels.
(A) Lack of willing volunteers.
(B) Lack of sufficient funding.
(C) High levels of nitrogen.
(D) Imbalanced oxygen levels.
參考答案
答案:D
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
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