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
单项选择题 Sailing directions are kept up to date by （）.
单项选择题 Place names used on board ships should be those （）.
单项选择题 While steaming slowly in the harbor，no ship is （） to exceed the speed limited．
