首页
登录
职称英语
Air turbulence can substantially accelerate the appearance of large dro
Air turbulence can substantially accelerate the appearance of large dro
游客
2025-02-21
22
管理
问题
Air turbulence can substantially accelerate the appearance of large droplets
triggering rain by presenting a new mechanism, the "sling effect", which
increases collisions of droplets that have become detached from the airflow.
Line First, vapor condensation in cloud cores produces small droplets resembling one
(5) another in size, which then expand to raindrop size by coalescing under the
effects of air turbulence—a force thought to cause collisions of similar-sized
droplets whose radii exceed a few micrometers. Then, turbulent vortices act as
small centrifuges that spin heavy droplets out, creating concentration
heterogeneities and jets of droplets, both of which increase the mean collision
(10) rate, which in turn accelerates rain initiation.
One can conclude that rain prediction requires a quantitative description of
droplet collision in turbulence, a mechanism which helps meteorologists to
forecast rainfall, but detailed understanding of the phenomenon entails
consideration of such factors as warm and cold fronts stretching over hundreds
(15) of miles, individual clouds perhaps a mile or so across, and even, as the
mechanism illustrates, tiny eddies perhaps a few centimeters or so in size. [br] The primary purpose of the passage is to
选项
A、explain and resolve a controversy among meteorologists
B、present and describe a recently discovered phenomenon
C、suggest and prove a theory on the cause of a phenomenon
D、describe and confirm research findings under question
E、discuss and evaluate the soundness of certain experimental observations
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3967149.html
相关试题推荐
Airturbulencecansubstantiallyacceleratetheappearanceoflargedro
Airturbulencecansubstantiallyacceleratetheappearanceoflargedro
Airturbulencecansubstantiallyacceleratetheappearanceoflargedro
Scientistshave______foryearsthatturbulencewithinthegaseouscloudsfoundt
Becauseoftheirspare,whiteappearance,ancientGreekstatuesinmodernmuseum
Asonewouldexpect,thereclusivepoet______publicappearanceandinvasionsof
Herfirstconcertappearancewasdisappointinglyperfunctoryandderivative,rat
ThedisappearanceofSteller’sseacowfromtheBeringandCopperislandsby
ThedisappearanceofSteller’sseacowfromtheBeringandCopperislandsby
TheappearanceofthestarGammaCepheivariesregularly.Theexistenceofa
随机试题
Evenplantscanrunafever,especiallywhentheyareunderattackbyinsect
Thehorseandcarriagearethingsofthepast.Butloveandmarriageares
[originaltext]M:WhatdoyouplantodoforChristmas?W:Noconcreteplan,but
塑料管道的弯头应尽量用人工弯曲而不用直角定型弯头,以利于自然补偿。
变量W_data定义如下:uniondata_node{floatff'in
关于高血压的诊断叙述正确的是A.收缩压>140mmHg,即诊断为高血压 B.舒
《证券期货投资者适当性管理办法》对代销机构的适当性管理方面进行了统一的要求,代销
房地产经纪人员职业道德从内容上讲,主要涉及()的方面。A:职业良心 B:思想
10月初,某地玉米现货价格为1710元/吨,某地某农场年产玉米5000吨。该农场
A.呼吸性酸中毒 B.代谢性酸中毒 C.呼吸性碱中毒 D.代谢性碱中毒
最新回复
(
0
)