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A warm air mass is characterized by（）.

题目
单选题
A warm air mass is characterized by（）.
A

stability

B

instability

C

gusty winds

D

good visibility

参考答案和解析
正确答案： A
解析： 暂无解析
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相似问题和答案

第1题：

Hygroscopic cargoes should be ventilated when ______.

A.going from a warm to a cold climate

B.the dew point of the outside air is greater than the dew point of the air in the hold

C.the dew point of the air in the hold is very low

D.the outside dew point is 16°C and the cargo temperature is 12°C


正确答案：A

第2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


正确答案：A

第3题：

Temperature and moisture characteristics are modified in a warm or cold air mass due to ______.

A.pressure changes in the air mass

B.movement of the air mass

C.the heterogeneous nature of the air mass

D.upper level atmospheric changes


正确答案：B

第4题：

As the temperature for an air mass decreases, the ______.

A.absolute humidity increases

B.relative humidity increases

C.specific humidity increases

D.dew point rises


正确答案：B
随着特定气体的温度升高，相对湿度降低。

第5题：

A warm air mass is characterized by______．

A.stability

B.instability

C.gusty winds

D.good visibility


正确答案：A
暖气团表现为较稳定的特征。

第6题：

A source of an air mass labeled mTw is ______.

A.the equator

B.the Gulf of Mexico

C.Alaska

D.Canada


正确答案：B

第7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


正确答案：C
雷暴天气是由于暖气团的上升超过冷气团造成的。

第8题：

Steam smoke will occur when ______.

A.extremely cold air from shore passes over warmer water

B.warm dry air from shore passes over cooler water

C.cold ocean water evaporates into warm air

D.cool rain passes through a warm air mass


正确答案：A

第9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


正确答案：D
平流雾最普遍产生于温暖潮湿的空气吹过较冷的水面。

第10题：

A cool mass of air heads toward the United States from the upper regions of Canada and Alaska this week according to the National Weather Service.
According to the NWS a mass of cold air will drop from the Arctic regions to Canada and then the upper Midwest next week.
Temperatures across the Midwest will drop into the 60s and 70s-a sharp difference from the 80 degree and 90 degree temperatures from recent weeks. And the relatively cooler air may be felt as far East as New York and Washington
The cool breezes may be a welcome relief this time around but remember the last few times we got hit with Arctic air？
Temperatures in cities including Chicago Cleveland New York and Louisville fell into single-digit and negative territory for long stretches during the harsh winter months of early 2014. But we’re sure you remember
According to the National Weather Service____

A. the cool mass of air originates from Canada
B. a mass of cold air will affect both Canada and the U.S
C. the chilly weather is back to the globe
D. only the upper Midwest will be affected by the cool air

答案：A
解析：
细节题。根据文段提到的“A cool mass of air heads toward the United States from the upper regions of Canada and Alaska this week according to the National Weather Service”。我们从这句当中可以知道，在加拿大和阿拉斯加地区形成的冷空气大规模的向美国行进。可知A项符合。B项指的冷空气会同时影响加拿大和美国。C项寒流天气会重来。D项仅仅是海拔较高的中部地区会受寒潮的影响。BCD项均不符文意。因此答案选A。

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