单项选择题
That half of the hurricane to the right hand side of its track (as you face the same direction that the storm is moving) in the Northern Hemisphere is called the().
A.windward side
B.leeward side
C.safe semicircle
D.dangerous semicircle
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单项选择题
Point Judith Harbor of Refuge().
A.is used mostly by towing vessels
B.has a maximum depth of 14 feet (4.3 meters) at MHW
C.West Gap has a controlling depth of 24 feet
D.is entered through the East Gap or the West Gap -
单项选择题
One method of controlling rats on vessels is by rat-proofing. Rat-proofing is accomplished by ().
A.installing rat guards on the mooring lines when in port
B.keeping foods protected and avoiding the accumulation of garbage
C.eliminating possible living spaces for rats when the ship is constructed
D.trapping and/or poisoning the rats -
单项选择题
Multi-year ice is the hardest sea ice and should be avoided if possible. It is recognizable because of what tone to its surface color? ()
A.Greenish
B.Bluish
C.Grey
D.Grey-white
