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As a cold front passes an observer, pressure ______.
A.drops and winds become variable
B.rises and winds become gusty
C.drops and winds become gusty
D.rises and winds become variable
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After a cold front passes，the barometric pressure______．A.drops，and the temperature dropsB.drops ， and the temperature risesC.rises，and the temperature dropsD.rises，and the temperature rises
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单选题Steady precipitation is typical of（）.A
coming cold weather conditionsB
a warm front weather conditionC
high pressure conditionsD
scattered cumulus clouds
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warm frontB
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单选题Your facsimile prognostic chart indicates that you will cross the cold front of a low pressure system in about 24 hours.You should（）.A
Expect to see cirrus clouds followed by altostratus and nimbostratus cloudsB
Alter course to remain in the navigable semicircleC
Prepare for gusty winds，thunderstorms，and a sudden wind shiftD
Expect clear weather，with steady winds and pressure，until the front passes
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单选题Monsoons are characterized by （）.A
light，variable winds with little or no humidityB
strong，gusty winds that blow from the same general direction all yearC
steady winds that reverse direction semiannuallyD
strong，cyclonic winds that change direction to conform to the passage of an extreme low pressure system
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单选题An occluded front is caused by a(n)（）.A
low pressure areaB
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单选题Cumulonimbus clouds can produce（）.A
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a rapid drop in barometric pressure followed by darkness
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单选题The height of a tide can be increased by（）.A
A storm surgeB
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单选题In the Northern Hemisphere，winds veering sharply to the west or northwest with increasing speed are indications that a（）.A
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low pressure center is approachingC
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单选题A series of brief showers accompanied by strong，shifting winds may occur along or some distance ahead of a(n)（）.A
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occluded frontD
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单选题Cyclones that have warm sectors usually move（）.A
westerlyB
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toward the nearest high pressure areaD
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单选题Steam smoke will occur when（）.A
extremely cold air from shore passes over warmer waterB
warm dry air from shore passes over cooler waterC
cold ocean water evaporates into warm airD
cool rain passes through a warm air mass
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单选题As a cold front passes an observer，pressure（）.A
drops and winds become variableB
rises and winds become gustyC
drops and winds become gustyD
rises and winds become variable
考题
单选题Which of the following statements concerning frontal movements is TRUE（）.A
The temperature rises after a cold front passesB
The barometric pressure rises when a warm front passesC
A cold front generally passes faster than a warm frontD
A warm front usually has more violent weather associated with it than a cold front
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单选题If an observer in the Northern Hemisphere faces the surface wind，the center of low pressure is to his（）.A
left，slightly behind himB
right，slightly behind himC
left，slightly in front of himD
right，slightly in front of him
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单选题What kind of conditions would you observe as the eye of a storm passes over your ship’s position（）.A
Huge waves approaching from all directions，clearing skies，light winds，and an extremely low barometerB
Flat calm seas，heavy rain，light winds，and an extremely low barometerC
Flat calm seas，heavy rain，light winds，and high pressureD
Huge waves approaching from all directions，clearing skies，light winds，and high pressure
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单选题After a cold front passes the barometric pressure usually（）.A
fluctuatesB
remains the sameC
remains the same，with clouds forming rapidlyD
rises，often quite rapidly，with clearing skies
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单选题After a cold front passes，the barometric pressure（）.A
drops，and the temperature dropsB
drops，and the temperature risesC
rises，and the temperature dropsD
rises，and the temperature rises
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