单项选择题
A.Effect of the moon's gravity B.Fetch C.Wind velocity D.Length of time a wind has been blowing
In a tropical cyclone，in the Northern Hemisphere，a vess...
单项选择题In a tropical cyclone，in the Northern Hemisphere，a vessel hove to with the wind shifting counterclockwise is（）.
A.ahead of the storm center B.in the dangerous semicircle C.in the navigable semicircle D.directly in the approach path of the storm
Cold water flowing southward through the western part o...
单项选择题Cold water flowing southward through the western part of the Bering Strait between Alaska and Siberia is joined by water circulating counterclockwise in the Bering Sea to form the（）.
A.Alaska Current B.Subarctic Current C.Kuroshio Current D.Oyashio Current
Advection fog is most commonly caused by（）.A.air being ...
单项选择题Advection fog is most commonly caused by（）.
A.air being warmed above the dew point B.saturation of cold air by rain C.a rapid cooling of the air near the surface of the Earth at night D.warm moist air being blown over a colder surface
