問題詳情
【題組】23
(A) They are also reliable and quiet, and can be installed quickly and easily.
(B) Solar energy is the only renewable energy technology that is not available today.
(C) One solution is to locate large-scale solar electric systems in deserts or marginal lands.
(D) However, solar energy is not produced at night and can also be unreliable due to cloudy weather.
參考答案
答案：A
難度：困難0.384615
統計：A(15),B(12),C(7),D(5),E(0)