A.the Canadian Coast Guard
B.Ice Sarnia
C.the Ice Navigation Center
D.the icebreaker assigned to the area
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A.coiling
B.faking
C.flemishing
D.thoroughfooting
A.pilot charts
B.Notices to Mariners
C.Tide Tables
D.Current Tables
A.are sheet or layer clouds
B.have undergone great vertical development
C.are middle or high altitude clouds
D.are rain clouds
A.as a mass of warm，humid air rises into the atmosphere and cools，condensing moisture into small droplets
B.as winds blow across bodies of water，the sun causes the moisture to be absorbed and move upward forming clouds
C.dry air compresses moisture from the atmosphere into clouds
D.when the relative humidity of the atmosphere is low
A.high pressure fluid accumulators
B.driving air-powered plunger pumps
C.filling open-circuit breathing systems
D.bladder-type accumulators
最新試題
Commercial ships or other persons or agencies requiring the assistance of Canadian Coast Guard icebreakers should first contact（）.
Deficient oxygen content inside a chain locker can be detected with（）.
Corrosive liquids and acids should have which kind of label?（）
Chronometer error may be found by（）.
Class I and II private aids to navigation in or along navigable waters of the United States are listed in the（）.
Daylight savings time is a form of zone time that adopts the time（）.
Channel 13 is primarily used for ship to ship communication. Channel 13 is also authorized for（）.
Chart legends printed in capital letters show that the associated landmark is（）.
Charts showing the coast of Mexico are produced by the United States（）.
Complete information on weather broadcasts throughout the world is contained in（）.