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.

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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