单项选择题On a voyage from Halifax,N.S.,to Dakar,West Africa,the Canary Current will ().

A.set the vessel to the left
B.set the vessel to the right
C.offer resistance in the form of a head current
D.furnish additional thrust in the form of a fair or following current


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1.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

2.单项选择题Lateral movement of the vessel to leeward of its course defines ().

A.Leeway
B.Leeside
C.Leeward
D.Lee moving

3.单项选择题Information on the operating times and characteristics of foreign radiobeacons can be found in which publication? ()

A.List of Lights
B.Coast Pilot
C.Sailing Directions
D.List of Radiobeacons

4.单项选择题In Admiralty Sailing Directions,bands is the word used to indicate()marking.

A.horizontal
B.vertical
C.diagonal
D.vertical or diagonal

6.单项选择题During daylight savings time the meridian used for determining the time is located farther ().

A.west in west longitude and east in east longitude
B.east in west longitude and west in east longitude
C.west
D.east

7.单项选择题During a period of whiteout,you should expect which of the following().

A.Snowfall or blowing snow
B.Lack of ability to estimate distance
C.Harsh contrast between sun-illuminated snow cover and the background
D.Hazy horizons with extensive mirage effects

9.单项选择题Conditions for crossing a rough bar are usually best at ().

A.low water slack
B.high water slack
C.high water ebb
D.high water flood

10.单项选择题Clearances of bridges and overhead cables below Bonneville Dam refer to heights in feet above mean ().

A.lower low water
B.high water
C.low water
D.sea level