問題詳情
8.Reference line is a line ________ on the radar screens in VTS Centers and/or electronic sea-charts separating the fairway for inbound and outbound vessels so that they can safely pass each other.
(A)show up
(B)appearance
(C)displayed
(D)setting
參考答案
答案：C
難度：困難0.333333
統計：A(0),B(2),C(1),D(0),E(0)