A.watch
B.look for
C.see
D.regard
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A.west in west longitude and east in east longitude
B.east in west longitude and west in east longitude
C.west
D.east
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
A.more serious
B.not less serious
C.more dangerous
D.no more dangerous
A.low water slack
B.high water slack
C.high water ebb
D.high water flood
A.lower low water
B.high water
C.low water
D.sea level
最新試題
Attention is called to the fact that in many cases charted depths may be decreased by up to （）.
During daylight savings time the meridian used for determining the time is located farther （）.
Information on the operating times and characteristics of foreign radiobeacons can be found in which publication? （）
The distance between any two meridians measured along a parallel of latitude （）.
On a voyage from Halifax,N.S.,to Dakar,West Africa,the Canary Current will （）.
In Admiralty Sailing Directions，bands is the word used to indicate（）marking．
As these features are not all charted，special caution should be exercised （） vessels navigating in the vicinity.
The height of tide is the （）.
Clearances of bridges and overhead cables below Bonneville Dam refer to heights in feet above mean （）.
A vessel is entering port A for the first time and has a Pilot conning the vessel. The Master is unsure that the Pilot is taking sufficient action to prevent a collision. What should the Master do（）.