单项选择题
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
Place names used on board ships should be those （）.A.sp...
单项选择题Place names used on board ships should be those （）.
A.specified by international authorities B.specified by national authorities C.on standard map D.on the chart or Sailing Directions in use
While steaming slowly in the harbor，no ship is （） to ex...
单项选择题While steaming slowly in the harbor，no ship is （） to exceed the speed limited．
A.assumed B.appreciated C.promised D.permitted
