首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Many of the most damaging and life threatening types of weather, such as torrential rains and severe thunderstorms, begin quickl
Many of the most damaging and life threatening types of weather, such as torrential rains and severe thunderstorms, begin quickl
admin
2014-07-25
21
问题
Many of the most damaging and life threatening types of weather, such as torrential rains and severe thunderstorms, begin quickly, strike suddenly, and disappear rapidly, destroying small regions while leaving neighboring areas untouched. Conventional(传统的)computer models of the atmosphere have limited value in predicting short-lived local storms because the available weather data are generally not detailed enough to allow computers to see clearly the small atmospheric changes that come before these storms. In most nations, for example, weather-balloon observations are taken just once every twelve hours at location typically separated by hundreds of miles. With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events.
Until recently, the observation-intensive approach needed for accurate, very short range forecasts, or "nowcasts" , was impracticable. The cost of equipping and operating many thousands of conventional weather stations was extremely high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were beyond overcoming. Fortunately, scientific and technological advance have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observations over large regions at a relatively low cost. Communication satellites can transmit data around the world cheaply and immediately, and modern computers can quickly compile and analyze this large volume of weather information. Meteorologists(气象学家)and computer scientists now work together to design computer programs and video equipment capable of transforming raw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly. As meteorologists have begun using these new technologies in weather forecasting offices, nowcasting is becoming a reality.
Nowcasts are______.
选项
A、local forecasts
B、short-range forecasts
C、medium-range forecasts
D、long-range forecasts
答案
B
解析
词义推断题。nowcasts是个“拼缀词”,由nowadays和forecasts两个词各取一部分相加,构成了一个新词,意思是“迅发天气预报”或“短期天气预报”,故可解释为short-range:forecasts,与定位句中very short range forecasts对应。
转载请注明原文地址:https://kaotiyun.com/show/M1xO777K
0
成人本科学位英语
相关试题推荐
Johnwas(notbarely)abletowalk(withouthelp)(becauseof)the(bad)injuryinhisleftleg.
Dr.Cleimandidnotexplaininthepassage______.Whichofthefollowingstatementsiswrong?
______canbejudgedfromhereyes,shehasnopersonalhostilitytous.
______inapeasantfamily,Jackalwayslikesfarmwork.
Weseelightening(beforewehear)thethunderit(causes)becausesoundtravels(moreslowly)than(lightis).
Thereason(why)Jack(failed)to(attend)thelectureis(because)hehadabadcold.
IrelandbecamesodependentonitthatthousandsofIrishpeoplestarvedwhenthecropfailedduringthe"PotatoFamine"of1845
Theboywoulddoeverythingbut______hisfault.
Ourcountryhasmanychancesforadultswhowanttomaketheirlivesbetter.Therearepublicschoolsyoucanattend.Inthesch
Thesummerholidayisthebestpartoftheyearformostchildren.(31)Theweatherisusuallygood,sothatonecanspendmost
随机试题
设cmd=who,以下4个命令中,执行结果与其他不同的是_______。
A.珠蛋白合成障碍B.血红素合成障碍C.DNA合成障碍D.铁利用障碍E.干细胞造血障碍缺铁性贫血是
脾虚证,采用“补母泻子法”,本经、他经分别应取()。
在计算会计政策变更的累积影响数时,其中“计算差异的所得税影响金额”是指如果采用应付税款法时,应调整“应交税费”科目,在采用纳税影响会计法时,应调整“递延税款”科目。()
阅读以下文章,回答问题:地震发生时,最基本的现象是地面的连续振动,主要是明显的晃动。极震区的人在感到大的晃动之前,有时首先感到上下跳动。这是因为地震波从地内向地面传来,纵波首先到达的缘故。横波接着产生大振幅的水平方向的晃动,是造成地震灾害的主要原因。
患者,男性,38岁。被人用刀划伤左面部,流血不止。检查见左耳前区皮肤有长约6cm的纵行伤口,深达肌肉前层,创缘整齐,有活动性出血。此患者最确切的诊断是()。
设函数μ=f(x,y)具有二阶连续偏导数,且满足等式=0,确定a,b的值,使等式通过变换ξ=x+ay,η=x+by可化简为=0。
Describeachildyoulike.Youshouldsay:whothischildiswhatyourrelationshipwiththischildiswhathe/sheislikeande
Formany,thepursuitofhappinessisalsothepursuitofprosperity.PartoftheAmericandreamistheabilitytoprovide【M1】__
Themajorcauseof"forgetting"isfailuretolearnthematerial【B1】______inthefirstplace.However,weforgetata【B2】______r
最新回复
(
0
)