A.spring，around late evening
B.spring，around early evening
C.fall，around early morning
D.fall，around midday
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A.always forms over water
B.is formed by a temperature inversion
C.is thinnest at the surface
D.dissipates during the evening
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
最新試題
The drift and set of tidal，river，and ocean currents refer to the（）.
In the Northern Hemisphere，a wind that shifts counterclockwise is a（）.
The apparent wind’s speed can be zero only when two conditions are present. One condition is that the true wind（）.
The place where a channel moves from along one bank of the river over to the other bank of the river is called a（）.
In shallow water，waves that are too steep to be stable，causing the crests to move forward faster than the rest of the wave，are called（）.
The currents are（）mosoonal origin．
Radiation fog（）.
The direction of the surface wind is（）.
Steam fog is most likely to occur on the Mississippi and Ohio Rivers in（）.
The presence of stratus clouds and a dying wind will usually result in（）.