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单选题
The first indications a mariner will have of the approach of a warm front will be （）.
A
large cumulonimbus (thunderclouds) building up
B
high cirrus clouds gradually changing to cirrostratus and then to altostratus
C
fog caused by the warm air passing over the cooler water
D
low dark clouds accompanied by intermittent rain
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更多 “单选题The first indications a mariner will have of the approach of a warm front will be （）.A large cumulonimbus (thunderclouds) building upB high cirrus clouds gradually changing to cirrostratus and then to altostratusC fog caused by the warm air passing over the cooler waterD low dark clouds accompanied by intermittent rain” 相关考题
考题
On a weather map, a large letter “H” means ______.A.a high pressure area with cool, dry air, and fair weatherB.a high pressure area with warm, moist air, and inclement weatherC.horse latitudes, with rough seas and strong windsD.a heavy squall line near the “H”
考题
Cumulonimbus clouds are most likely to accompany a(n) ______.A.high pressure systemB.cold frontC.warm frontD.occluded front
考题
The first indications a mariner will have of the approach of a warm front will be ______.A.large cumulonimbus (thunderclouds) building upB.high cirrus clouds gradually changing to cirrostratus and then to altostratusC.fog caused by the warm air passing over the cooler waterD.low dark clouds accompanied by intermittent rain
考题
Fog is most commonly associated with a(n) ______.A.warm front at nightB.low pressure areaC.anticycloneD.lack of frontal activity
考题
On the approach of a warm front the barometric pressure usually ______.A.fallsB.risesC.is steadyD.is unreliable
考题
In many areas "atoll" clouds (clouds of vertical development) are produced over small islands. These are the result of ______.A.rising air currents produced by the warm islandsB.warm air from the sea rising over higher land areasC.cool land air mixing with warm sea airD.descending air over the islands
考题
Cumulus clouds that have undergone vertical development and have become cumulonimbus in form，indicate ______．A.clearing weatherB.that a warm front has passedC.probable thunderstorm activityD.an approaching hurricane or typhoon
考题
A frontal thunderstorm is caused by ______.A.pronounced local heatingB.wind being pushed up a mountainC.a warm air mass rising over a cold air massD.an increased lapse rate caused by advection of warm surface air
考题
Advection fog is most commonly caused by ______.A.air being warmed above the dew pointB.saturation of cold air by rainC.a rapid cooling of the air near the surface of the Earth at nightD.warm moist air being blown over a colder surface
考题
An occluded front is caused by a(n) ______.A.low pressure areaB.high pressure areaC.area of calm airD.cold front overtaking a warm front
考题
Clouds appearing in the following order: cirrus, cirrostratus, altostratus, stratus, and nimbostratus usually indicate the approach of a(n) ______.A.warm frontB.occluded frontC.medium frontD.cold front
考题
Cumulonimbus clouds can produce ______.A.dense fog and high humidityB.gusty winds, thunder, rain or hail, and lightingC.clear skies with the approach of a cold frontD.a rapid drop in barometric pressure followed by darkness
考题
单选题Steady precipitation is typical of（）.A
coming cold weather conditionsB
a warm front weather conditionC
high pressure conditionsD
scattered cumulus clouds
考题
单选题Cirrus clouds followed by cirrostratus then altostratus，stratus，and occasionally nimbostratus indicate the approach of a(n)（）.A
cold frontB
warm frontC
tropical frontD
occluded front
考题
单选题Clouds appearing in the following order: cirrus，cirrostratus，altostratus，stratus，and nimbostratus usually indicate the approach of a(n)（）.A
warm frontB
occluded frontC
medium frontD
cold front
考题
单选题An occluded front is caused by a(n)（）.A
low pressure areaB
high pressure areaC
area of calm airD
cold front overtaking a warm front
考题
单选题An occluded front is usually caused by a（）.A
cold front becoming stationaryB
warm front becoming stationaryC
cold front overtaking a warm frontD
warm front dissipating
考题
单选题The first indications a mariner will have of the approach of a warm front will be （）.A
large cumulonimbus (thunderclouds) building upB
high cirrus clouds gradually changing to cirrostratus and then to altostratusC
fog caused by the warm air passing over the cooler waterD
low dark clouds accompanied by intermittent rain
考题
单选题A frontal thunderstorm is caused by（）.A
pronounced local heatingB
wind being pushed up a mountainC
a warm air mass rising over a cold air massD
an increased lapse rate caused by advection of warm surface air
考题
单选题Cumulus clouds that have undergone vertical development and have become cumulonimbus in form，indicate（）.A
clearing weatherB
that a warm front has passedC
probable thunderstorm activityD
an approaching hurricane or typhoon
考题
单选题Cyclones that have warm sectors usually move（）.A
westerlyB
parallel to the isobars in the warm sectorC
toward the nearest high pressure areaD
faster than the accompanying cold front
考题
单选题（）is the most widespread type likely to be encountered at sea and is caused by relatively warm air being cooled by flowing over a cooler sea surface.A
FRONTAL FOGB
MIXING FOGC
ADVECTION FOGD
RADIATION FOG
考题
单选题On the approach of a warm front the barometric pressure usually（）.A
fallsB
risesC
is steadyD
is unreliable
考题
单选题In many areas atoll clouds (clouds of vertical development) are produced over small islands. These are the result of（）.A
rising air currents produced by the warm islandsB
warm air from the sea rising over higher land areasC
cool land air mixing with warm sea airD
descending air over the islands
考题
单选题Cumulonimbus clouds can produce（）.A
dense fog and high humidityB
gusty winds，thunder，rain or hail，and lightningC
clear skies with the approach of a cold frontD
a rapid drop in barometric pressure followed by darkness
考题
单选题The fog produced by warm moist air passing over a cold surface is called（）.A
conduction fogB
radiation fogC
frontal fogD
advection fog
考题
单选题On a weather map,a large letter “h” means（）A
a high pressure area with cool, dry air and fair weatherB
a high pressure area with warm, moist air and inclement weatherC
horse latitudes, with rough seas and strong windsD
a heavy squall line near the “H”
考题
单选题A cloud sequence of cirrus，cirrostratus，and altostratus clouds followed by rain usually signifies the approach of a(n)（）.A
occluded frontB
stationary frontC
warm frontD
cold front
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