单项选择题
A.Amendments to Admiralty Sailing Directions B.Amendments to Admiralty List of Lights and Fog Signals C.Amendments to Admiralty List of Radio Signals D.Supplement to Guide to Port Entry
（）are published for the correction of Admiralty Charts．...
单项选择题（）are published for the correction of Admiralty Charts．
A.Admiralty Sailing Directions B.Admiralty List of Signals C.Mariner's Handbook D.Admiralty Notices to Mariners
A chart has extensive corrections to be made to it. Whe...
单项选择题A chart has extensive corrections to be made to it. When these are made and the chart is again printed，the chart issue is a （）.
A.first edition B.new edition C.revised edition D.reprint
Charts are subject to frequent correction according to ...
单项选择题Charts are subject to frequent correction according to （）.
A.Notices to Mariners B.Mariner's handbook C.Sailing Directions D.Guide to Port Entry
