单项选择题
A.published every year and require no corrections
B.published every second year and must be corrected
C.published every five years and require no correction
D.accurate thru NM number on title page and must be corrected
单项选择题 Important changes to charts and lights（including temporary ones），radio signals and sailing directions are listed in（）.
单项选择题 For details of these and other lights the larger scale charts and Admiralty Lists should be （）.
单项选择题 Before personnel are lifted from a vessel in a personnel basket，the vessel should be（）.