单项选择题
The distance between the surface of the water and the tidal datum is the （）.
A.range of tide B.height of tide C.charted depth D.actual water depth
单项选择题 The distance between any two meridians measured along a parallel of latitude and expressed in miles is the （）.
单项选择题 The distance between any two meridians measured along a parallel of latitude （）.
单项选择题 On a voyage from Halifax,N.S.,to Dakar,West Africa,the Canary Current will （）.
