第14题:[单选题] Many navigational warnings are of a temporary nature,but others remain in force for several months or may be succeeded by ______. A. Notices to Mariners B. Sailing Directions C. List of Lights and Signals D. Guide to Port Entries 参考答案:A 【参考译文】许多航行警告是临时性的,但有的保持生效数月或转载到航海通告中。 【解 析】temporary临时的in force生效的succeed继续