問題詳情

16.__________ means an easily transportable buoy used to temporarily replace an aid tonavigation not watching properly.
(A)Sea buoy
(B)Marker buoy
(C)Sound buoy
(D) Discrepancy buoy

參考答案

答案：D
難度：困難0.333333
統計：A(0),B(0),C(2),D(1),E(0)