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 torrential rains, severe thunderstorms, and tornadoes begin quic
Many of the most damaging and life threatening types of weather torrential rains, severe thunderstorms, and tornadoes begin quic
admin
2013-03-09
35
问题
Many of the most damaging and life threatening types of weather torrential rains, severe thunderstorms, and tornadoes begin quickly, strike suddenly, and disappear rapidly, destroying small regions while leaving neighboring areas untouched. Such event as a tornado struck the northeastern section of Edmonton, Alberta, in July 1987. Total damages from the tornado exceeded $250 million, the highest ever for any Canadian storm.
Conventional computer models of the atmosphere have limited value in predicting short lived local storms like the Edmonton tornado, because the available weather data are generally not detailed enough to allow computers to study carefully the subtle atmospheric Changes that come before these storms. In most nations, for example, weather-balloon observations are taken just once every twelve hours at locations 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 net feasible. 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 from such a network were hard to overcome. Fortunately, scientific and technological advances have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observation over large regions at a relatively low cost Communications satellites can transmit data around the world cheaply and instantaneously, and modem computers can quickly compile and analyze this large volume of weather information. Meteorologists 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.
选项
A、added up to
B、were more than
C、were about
D、were less than
答案
B
解析
词汇题。exceed的意思是“超过”。
转载请注明原文地址:https://kaotiyun.com/show/IiI7777K
0
大学英语六级
相关试题推荐
Itusedtobesostraightforward.Ateamofresearchersworkingtogetherinthelaboratorywouldsubmittheresultsoftheirres
Thesmartestmanintheworldisnot_________tothedepressionthatcanaccompanyseveredisabilities.
Youremployerwill______incometaxfromyoursalary.
Inspiteofhisunfortunatepersonalexperience,hissongs______afeelingofwarmthandhopetotheaudience.
Civilservantsshouldbeashelpfulaspossible,and______informationonlyintheinterestsofnationalsecurity.
A、Thecollegedoesn’thaveanyrock-climbingequipment.B、Therearenoappropriateplacesforclimbingnearby.C、Thereisnoone
A、Hedoesn’thaveanygoodideas.B、Hehasmanyinterestingdreams.C、Hedoesn’tputhisideasintopractice.D、Hesleepsalot
A、Hewilltakeacoffeebreak.B、Hewillkeeponworking.C、Hewillgoforawalk.D、Hewillbeginwiththereport.B由男士提到的Iwis
A、Socialworkers.B、Policemen.C、Schoolteachers.D、Astreetcleaner.A选项表明,本题考查人物身份,听音时应留意能体现出人物职业身份的语句。由短文中提到的Theboy,whois
随机试题
Whatarethespecifictraitsthatwillassistexecutivestoclimbtheladderofsuccess?Opinionsvarywidely.Givenapproximatel
Healthytreesareimportanttousall.Treesprovideshade,beauty,andhomesforwildlife.Treesgiveusproductslikepaperan
患者,女,50岁。应用激素替代疗法5年,现阴道不规则流血20余天,时多时少,淋漓不尽。适合该患者的辅助检查是
甲氧苄啶(抗菌增效剂)TMP的作用机制为
男,68岁,2周来反复胸痛,发作与劳累及情绪有关,休息可以缓解。3小时前出现持续性疼痛,进行性加剧,并气促,不能平卧,血压110/70mmHg,心率120次/分,律齐,心尖部可闻及3/6级收缩期杂音,双肺散在哮鸣音及湿啰音应首选检查
国有独资公司监事会成员不得少于()人,其中职工代表的比例不得低于1/3,具体比例由公司章程规定。
在以下建材中,何者不属于以抗压强度划分等级?[2000-016]
唯理论的特点有( )
下列不属于计时器控件属性的是
A、Consideringeasternphilosophy.B、Takingwesternmedicines.C、Changingpatients’lifestyle.D、Usingvitaminsupplements.ADr.B
最新回复
(
0
)