問題詳情
15.A buoy, marking the fairway in a channel, is painted in black-and-white or red-and-white verticalstripes defines ___________ .
(A)fairway buoy
(B)obstruction buoy
(C)special-purpose buoy
(D)junction buoy
參考答案
答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)