船舶通訊與航海英文(概要)題庫下載題庫

上一題
38.A light illuminating a sector or very narrow angle and intended to mark a direction to be followed is known as .
(A)sector light
(B)directional light
(C)danger light
(D)range light


38.A light illuminating a sector or very..-阿摩線上測驗