第30题:[单选题]?A vessel engaged in ______ shall not impede the passage of any other vessel navigating within a narrow channel or fairway. A. mine clearance operation B. towing operation C. dredging or surveying or underwater operation D. fishing 参考答案:D 【参考译文】从事于捕鱼的船舶不应妨碍在狭水道或航道内航行的任何其他船舶的通行。 【解 析】engaged in从事于impede妨碍fairway航道 【相关考题】