(1.5 分)
Which of the following is not used for kept Sailing Directions up-to- date?
A.by new edition at intervals of approximately 3 years B.by supplements C.by Admiralty Notices to Mariners D.Annual Summary of Admiralty Notices to Mariners正确答案B
(1.5 分)
Which of the following is not used for kept Sailing Directions up-to- date?
A.by new edition at intervals of approximately 3 years B.by supplements C.by Admiralty Notices to Mariners D.Annual Summary of Admiralty Notices to Mariners正确答案B
