航海英語海洋學基本知識單項選擇題每日一練(2019.04.03)

單項選擇題
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
單項選擇題
In mid-ocean，the characteristics of a wave are determined by three factors. What is NOT one of these factors?（）.
A.Effect of the moon's gravity
B.Fetch
C.Wind velocity
D.Length of time a wind has been blowing
單項選擇題
In the Northern Hemisphere you are caught in the dangerous semicircle with plenty of sea room available. The best course of action is to bring the wind on the（）.
A.starboard bow and make as much headway as possible
B.starboard quarter，and make as much headway as possible
C.port quarter，and make as much headway as possible
D.port bow，and make as much headway as possible
單項選擇題
The drift and set of tidal，river，and ocean currents refer to the（）.
A.position and area of the current
B.speed and direction toward which the current flows
C.type and characteristic of the current's flow
D.None of the above
單項選擇題
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