单项选择题
On a voyage from Capetown to London，the favorable ocean current off the coast of Africa is the （）.
A.Canary Current B.Benguela Current C.Agulhas Current D.South Atlantic Current
单项选择题 Lateral movement of the vessel to leeward of its course defines （）.
单项选择题 Information on the operating times and characteristics of foreign radiobeacons can be found in which publication? （）
单项选择题 In Admiralty Sailing Directions，bands is the word used to indicate（）marking．
