A.moderate but easily navigated
B.calm
C.mountainous and confused
D.mountainous but fairly regular as far as direction is concerned
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A.high relative humidity
B.frequent showers and thunderstorms
C.steep pressure gradients
D.frequent calms
A.steady，constant winds
B.frequent rain showers and thunderstorms
C.steep pressure gradients
D.low relative humidity
A.high winds
B.high overcast clouds
C.calm or light winds
D.fog or steady rain
A.north to south
B.south to north
C.east to west
D.west to east
A.3 times the depth of water
B.6 times the depth of water
C.10 times the depth of water
D.15 times the depth of water
最新試題
In the Northern Hemisphere，the right half of the storm is known as the dangerous semicircle because（）.
In the Northern Hemisphere，if your vessel is in a hurricane’s navigable semicircle it should be positioned with the wind on the（）.
What kind of conditions would you observe as the eye of a storm passes over your ship’s position（）.
What kind of pressure systems travel in easterly waves（）.
The southeast trade winds actually blow toward the（）.
Wen a hurricane passes over colder water or land and loses its tropical characteristics，the storm becomes a（n）（）.
The direction of prevailing winds in the Northern hemisphere is caused by the（）.
The strong wind will make us（）here for some days.
Tropical cyclones are classified by form and intensity.Which system does not have closed isobars（）.
In the Northern Hemisphere a wind is said to veer when the wind（）.