单项选择题
A.speed of the current at a particular time B.maximum speed of the current C.direction from which the current flows D.direction in which the current flows
The Benguela Current flows in a（）.A.SWly direction alon...
单项选择题The Benguela Current flows in a（）.
A.SW'ly direction along the NW coast of Africa B.S'ly direction off the East Coast of Australia C.NW'ly direction along the SW coast of Africa D.SW'ly direction along the SE coast of Greenland
Stand of the tide is that time when（）.A.the vertical ri...
单项选择题Stand of the tide is that time when（）.
A.the vertical rise or fall of the tide has stopped B.slack water occurs C.tidal current is at a maximum D.the actual depth of the water equals the charted depth
Spring tides are tides that（）.A.have lows lower than no...
单项选择题Spring tides are tides that（）.
A.have lows lower than normal and highs higher than normal B.have lows higher than normal and highs lower than normal C.are unpredictable D.occur in the spring of the year
