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
2010-01-26
78
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 neighbouring 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 not 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 data 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.
The word "exceeded" in paragraph 1 most probably means______.
选项
A、added up to
B、were more than
C、were about
D、were less than
答案
B
解析
exceed的意思是“超过”。
转载请注明原文地址:https://www.kaotiyun.com/show/6RdK777K
0
大学英语六级
相关试题推荐
Builtin1998byasmallgroupofpassionateeducationandtechprofessionals,Tutor,comoffersone-to-onelearningsolutionsf
Afterthetalk,bothsidesagreedtodraw________aformalagreement.
A、Shedoesn’tliketheshoes.B、Sheisjustlookingaround.C、Shedoesn’tliketheservice.D、Shecan’tdecidewhichpairtocho
Smoking(know)________toincreaseaperson’sriskofdevelopinglungcancer.
Manyaspecialist________lookingforwardtoattendingthatconferencenowandthey________plantsinthelasttwoyearstopr
A、Dr.Smith’swaitingroomisn’ttidy.B、Dr.Smithenjoysreadingmagazines.C、Dr.Smithhasleftagoodimpressiononher.D、Dr
A、Doubtful.B、Reserved.C、Indifferent.D、Supportive.DWhatisthewoman’sattitudetowardstheGreenPeace’scampaigns?本题为细节题,考
A、Slowexercises.B、RestOrmeditation.C、Restandmeditation.D、Remainingcomfortable.BWhatwouldapersontypicallydoafter
Inordertokeepourbrainhealthy,weshouldhold______.Accordingtoresearch,______naturallytendtotakethepositivevi
A、Six.B、Seven.C、Five.D、Sixorseven.DHowmanyitemsshouldthemanpickup?信息明示题。男士说自己记得妈妈让他买的六七件物品中的大多数,即他本应该买六七件物品,故选D。
随机试题
PN结加反向电压时,空间电荷区将【】
以下哪项不是小儿年龄阶段的划分依据
男,18,右大腿下端肿胀,疼痛伴消瘦、乏力2个月。查体:右膝上肿胀,皮肤静脉怒张。X线片见右股骨下端骨质破坏,可见Codman三角。首先考虑的诊断是
张护士要给2床的患者输血1300ml。患者容易出现以下哪组电解质和酸碱平衡紊乱,张护士需注意观察
某建设项目废气中SO2的等标排放量是3.7×109,且该项目处于沿海地区,则该项目大气的评价等级为()。
会计法律制度是指国家权力机关和行政机关制定的各种会计规范文件的总称,下列各项中属于会计法律制度的有()。
阳慧在解决问题的过程中,常以老师、同学的建议作为参照做出决策。她的这种认知风格属于()。
某社区,实有人口2万余人,暂住人口1.8万余人,来自全国26个省市,房屋租赁市场管理混乱,治安隐患突出。几任社区民警都未能有效解决该问题。经验丰富的马某到该社区担任社区民警后,决心彻底扭转这种局面。他从警民关系入手,每天背着自制的音响设备,向群众宣传安全防
根据以下资料,回答问题。下列关于2009年各省区市普通高中招生数与专任教师数之比的描述,正确的是()。
人们预感失败不可避免时,积极地搜索乃至制造影响自己成功的不利因素,这种现象叫做()
最新回复
(
0
)