A.non-toxic gas
B.Oxygen
C.Hydrogen
D.Helium
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A.equatorial area
B.polar regions
C.mid-latitudes
D.All of the above
A.makes no change at all
B.is somewhat lower than it would be for winds from a northern quadrant
C.is uncertain and may fluctuate by increasing and decreasing
D.is somewhat higher than it would be for winds from the northern quadrant
A.logs must be kept in an orderly manner
B.erasures are not allowed
C.it must identify the vessel's name and official number
D.All of the above
A.the Sailing Directions and the Coast Pilot
B.a weather fax
C.the Local Notice to Mariners
D.the Light List
A.a break-glass and pull-cable system
B.electrical controls on the bridge
C.a mechanical arm outside the vent duct
D.the heat of a fire melting the link
最新試題
From your position you observe a rotating white and green light to the north. This light is most likely（）.
How can the Coast Guard determine that a crew member is “able to understand any order spoken by the officers”?（）
How does a vessel’s rate of turn change when entering shallow water?（）
How is the annual rate of change for magnetic variation shown on a pilot chart?（）
Great Salt Pond on Block Island is（）.
Generally speaking，in the Northern Hemisphere，when winds are blowing from between SE and SW the barometric reading（）.
How could lashing gear used aboard Ro-Ro vessels be stowed when not in use?（）
Freeboard is measured from the upper edge of the（）.
How do you operate a portable CO2 fire extinguisher?（）
General information on enroute weather and climate is found in（）.