A.always forms over water
B.is formed by a temperature inversion
C.is thinnest at the surface
D.dissipates during the evening
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A.prevailing westerlies
B.geostrophic winds
C.doldrums
D.horse latitudes
A.create large waves in the direction of the current
B.change direction 360°during a 24 hour period
C.remain fairly constant in direction and velocity throughout the year
D.are characterized by a light green color
A.permanent waves
B.tidal waves
C.tropical waves
D.tropical storms
A.starboard bow，note the course，and head in that direction
B.starboard quarter，note the course，and head in that direction
C.port quarter，note the course，and head in that direction
D.port bow，note the course，and head in that direction
A.veering wind
B.backing wind
C.reverse wind
D.chinook wind
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The direction of the surface wind is（）.
The edge of a hurricane has overtaken your vessel in the Gulf of Mexico，and the northwest wind of a few hours ago has shifted to the west. This is an indication that you are located in the（）.
In modern fathometers the sonic or ultrasonic sound waves are produced electrically by means of a(n)（）.
In a tropical cyclone，in the Northern Hemisphere，a vessel hove to with the wind shifting counterclockwise is（）.
The direction of the southeast trade winds is a result of the（）.
The drift and set of tidal，river，and ocean currents refer to the（）.
The apparent wind can be zero when the true wind is from（）.
The currents are（）mosoonal origin．
In the Northern Hemisphere the major ocean currents tend to flow（）.
Advection fog holds longest over which portions of the lakes?（）