单项选择题

Monsoons are characterized by（）.

A.light，variable winds with little or no humidity
B.strong，gusty winds that blow from the same general direction all year
C.steady winds that reverse direction semiannually
D.strong，cyclonic winds that change direction to conform to the passage of an extreme low pressure system

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热门试题

单项选择题MIST is caused by（）.

A.forest fires
B.smoke from industrial areas
C.dust or sand storms
D.water droplets with the relative humidity more than 95%

单项选择题In the Southern Hemisphere winds in a low pressure system rotate in a（）.

A.clockwise direction
B.northeasterly direction
C.northerly direction
D.counterclockwise direction

单项选择题In the relatively calm area near the hurricane center，the seas are（）.

A.moderate but easily navigated
B.calm
C.mountainous and confused
D.mountainous but fairly regular as far as direction is concerned

单项选择题In the Northern Hemisphere，when the wind at your location is northerly，the low pressure center causing the wind is located to your（）.

A.NNW
B.WSW
C.ESE
D.SSW

单项选择题In the Northern Hemisphere，the right half of the storm is known as the dangerous semicircle because（）.

A.the wind speed is greater here since the wind is traveling in the same general direction as the storm's track
B.the direction of the wind and seas might carry a vessel into the path of the storm
C.the seas are higher because of greater wind speed
D.All of the above