A.east
B.west
C.east in west longitude and west in east longitude
D.west in west longitude and east in east longitude
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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.release
B.relate
C.relieve
D.retain
A.take
B.think
C.believe
D.consider
A.what
B.that
C.which
D.who
A.received
B.retrieved
C.relieved
D.resumed
最新試題
Each hose used for transferring vapors must（）.
Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.
During the course of a voyage，a seaman falls on the main deck and injures his ankle. The Master should submit a Report of Marine Accident，Injury or Death if the（）.
Fighting a rig fire in the ballast pumproom with hoses would adversely affect the stability of the rig most by（）.
During the winter months，the southeast trade winds are（）.
Fighting a rig fire in a watertight compartment with hoses could reduce the stability of the rig by（）.
Each EPIRB required on a ship shall be stowed in a manner which will permit（）.
Fittings used for towing must be（）.
During the month of October the Sun’s declination is（）.
Fire protection regulations apply to those towing vessels（）.