問題詳情
40. The _____ means the greatest distance that a light can be seen under its nominal range
and the existing meteorological visibility.
(A) nominal range
(B) luminous range
(C) meteorological range
(D) geographic range
參考答案
答案：B
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中