单项选择题
In the Northern Hemisphere，winds veering sharply to the west or northwest with increasing speed are indications that a（）.
A.cold front has passed
B.low pressure center is approaching
C.stationary front exists
D.high pressure center has passed
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相关考题
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单项选择题
In the Northern Hemisphere，what type of cloud formations would you expect to see to the west of an approaching tropical wave?（）.
A.Cumulus clouds lined up in rows extending in a northeast to southwest direction
B.High altostratus clouds in the morning hours
C.Cirrostratus clouds lined up in rows extending in a northeast to southwest direction
D.Cirrostratus clouds lined up in rows extending in a north to south direction -
单项选择题
In the Northern Hemisphere，the largest waves or swells created by a typhoon or hurricane will be located（）.
A.in the southeast quadrant of the storm
B.directly behind the storm center
C.forward and to the right of its course
D.behind and to the left of its course -
单项选择题
In the Northern Hemisphere，gusty winds shifting clockwise，a rapid drop in temperature，thunderstorms or rain squalls in summer (frequent rain/snow squalls in winter) then a rise in pressure followed by clearing skies，indicate the passage of a(n)（） .
A.warm front
B.tropical cyclone
C.anticyclone
D.cold front
