問題詳情

39.For the light character on light buoys, if total duration of light longer than total duration ofdarkness, it is:
(A) Occulting
(B)Isophase
(C)Flashing
(D)Very quick

參考答案

答案：A
難度：適中0.6
統計：A(3),B(1),C(1),D(0),E(0)