单项选择题
A.corrections B.publications C.supplements D.alterations
Every new supplement to the Sailing Directions （） the p...
单项选择题Every new supplement to the Sailing Directions （） the previous one．
A.enforces B.cancels C.corrects D.replenishes
In Admiralty Sailing Directions，STRIPES is the word use...
单项选择题In Admiralty Sailing Directions，STRIPES is the word used to indicate （）marking.
A.horizontal B.vertical C.diagonal D.vertical or diagonal
Sailing directions are kept up to date by （）.A.publicat...
单项选择题Sailing directions are kept up to date by （）.
A.publications B.notices to mariners C.supplements D.Annual Summary of Admiralty Notices to Mariners
