海船船员考试
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 ove
题目
large cumulonimbus (thunderclouds) building up
high cirrus clouds gradually changing to cirrostratus and then to altostratus
fog caused by the warm air passing over the cooler water
low dark clouds accompanied by intermittent rain
参考答案和解析
相似问题和答案
第1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
第2题：
On the approach of a warm front the barometric pressure usually ______.
A.falls
B.rises
C.is steady
D.is unreliable
第3题：
On a weather map, a large letter “H” means ______.
A.a high pressure area with cool, dry air, and fair weather
B.a high pressure area with warm, moist air, and inclement weather
C.horse latitudes, with rough seas and strong winds
D.a heavy squall line near the “H”
在天气图上大写字母H的意思是伴随阴凉，干燥和晴好天气的高压。
第4题：
Advection fog is most commonly caused by ______.
A.air being warmed above the dew point
B.saturation of cold air by rain
C.a rapid cooling of the air near the surface of the Earth at night
D.warm moist air being blown over a colder surface
平流雾最普遍产生于温暖潮湿的空气吹过较冷的水面。
第5题：
Cumulus clouds that have undergone vertical development and have become cumulonimbus in form，indicate ______．
A.clearing weather
B.that a warm front has passed
C.probable thunderstorm activity
D.an approaching hurricane or typhoon
第6题：
Fog is most commonly associated with a(n) ______.
A.warm front at night
B.low pressure area
C.anticyclone
D.lack of frontal activity
第7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 islands
B.warm air from the sea rising over higher land areas
C.cool land air mixing with warm sea air
D.descending air over the islands
第8题：
Cumulonimbus clouds are most likely to accompany a(n) ______.
A.high pressure system
B.cold front
C.warm front
D.occluded front
第9题：
A frontal thunderstorm is caused by ______.
A.pronounced local heating
B.wind being pushed up a mountain
C.a warm air mass rising over a cold air mass
D.an increased lapse rate caused by advection of warm surface air
雷暴天气是由于暖气团的上升超过冷气团造成的。
第10题：
An occluded front is caused by a(n) ______.
A.low pressure area
B.high pressure area
C.area of calm air
D.cold front overtaking a warm front
锢囚锋是由于冷锋赶上暖风造成的。