A.stronger
B.thinner
C.more corrosion resistant
D.a lower grade steel
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A.warmer，less dense，and less stable
B.cool，more dense，and drier
C.muggy and cloudy
D.extremely moist with high relative humidity
A.the Canadian Coast Guard
B.Ice Sarnia
C.the Ice Navigation Center
D.the icebreaker assigned to the area
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
最新試題
Deficient oxygen content inside a chain locker can be detected with（）.
Coiling new rope against the lay，bringing the lower end up through the center of the coil，then coiling with the lay，in order to remove the kinks，is known as（）.
Clouds with the prefix “nimbo” in their name（）.
Compliance with the terms of the load line certificate on a ship is the responsibility of the（）.
Denebola is found in what constellation?（）
Complete information on weather broadcasts throughout the world is contained in（）.
Deneb is found in what constellation?（）
Clean air standards referred to as “Grade D” apply to compressed air for use in（）.
Dacron sails，when not in use，may be damaged if（）.
Channel 13 is primarily used for ship to ship communication. Channel 13 is also authorized for（）.