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
Avalanche and Its Safety An avalanche is a sudden and rapid flow of snow, often mixed with air and water, down a mountainside. A
Avalanche and Its Safety An avalanche is a sudden and rapid flow of snow, often mixed with air and water, down a mountainside. A
admin
2009-06-15
57
问题
Avalanche and Its Safety
An avalanche is a sudden and rapid flow of snow, often mixed with air and water, down a mountainside. Avalanches are(51)the biggest dangers in the mountains for both life and property.
All avalanches are caused by an over-burden of material, typically snowpack, that is too massive and unstable for the slope(52)supports it. Determining the critical load, the amount of over-burden which is(53)to cause an avalanche,(54)a complex task involving the evaluation of a number of factors.
Terrain slopes flatter than 25 degrees or steeper than 60 degrees typically have a low(55)of avalanche. Snow does not(56)significantly on steep slopes; also, snow does not(57)easily on flat slopes. Human-triggered avalanches have the greatest incidence when the snow’s angle of rest is(58)35 and 45 degrees; the critical angle, the angle at which the human incidence of avalanches is greatest, is 38 degrees. The rule of thumb is: A slope that is(59)enough to hold snow but steep enough to ski has the potential to generate an avalanche, regardless of the angle. Additionally, avalanche risk increases with(60); that is, the more a slope is disturbed by skiers, the more likely it is that an avalanche will occur.
Duc to the complexity of the subject, winter travelling in the backcountry is never 100% safe. Good avalanche safety is a continuous(61), including route selection and examination of the snowpack, weather(62), and human factors. Several well-known good habits can also(63)the risk. If local authorities issue avalanche risk reports, they should be considered and all warnings should be paid(64)to. Never follow in the tracks of others without your own evaluations; snow conditions are almost certain to have changed since they were made. Observe the terrain and note obvious avalanche paths where plants are(65)or damaged. Avoid traveling below others who might trigger an avalanche.
选项
A、among
B、of
C、to
D、in
答案
A
解析
表达“雪崩是山上可能发生的最大危险之一”的意思,因此应该选择among(在……之中)。
转载请注明原文地址:https://kaotiyun.com/show/yUhd777K
本试题收录于:
职称英语理工类基础题库职称英语分类
0
职称英语理工类基础
职称英语
相关试题推荐
LanguageandCommunicationAlanguageisasignalingsystemwhichoperateswithsymbolicvocalsounds(语声),andwhichisused
AchangesofNewspapersBservicebyNewspapersCsaleplaceofNewspapersDpopularityofNewspapersETrendofNewspapers
AIntroductiontoSingaporeBEducationCEconomyDStateSystemofSingaporeEHistoryofSingaporeFLandandClimate
WhichofthefollowingisNOTasymptomofpostpartumpsychosis?Apatientsufferingfrom"babyblues"maypresentbrieflyone
BetterControlofTBSeenIfaFasterCureIsFoundTheWorldHealthOrganizationestimatesthataboutone-thirdofallpeoplea
BetterControlofTBSeenIfaFasterCureIsFoundTheWorldHealthOrganizationestimatesthataboutone-thirdofallpeoplea
Therearealtogether13dragstreatingsleepdisordersintheUnitedStates.Sleep-walkingisalsooneoftheserioussideeffe
Beforeexercise.You’dbetterdosomethingtowarmupfirst.Doingtheexercisetentimeseachdaycanimproveyourhealth.
ExploreroftheExtremeDeepOceanscovermorethantwo-thirdsofourplanet.Yet,justasmallfractionoftheunderwaterw
Hehasexhibitedsymptomsofanxietyandoverwhelmingworry.
随机试题
手足厥寒,口不渴,或腰、股、腿、足疼痛,舌淡苔白,脉沉细或细而欲绝。辨证为血虚寒厥证。方剂宜选用
企业2000年流动资产合计为3000万元,其中存货为1500万元,应收账款1500万元,流动负债合计2000万元,则该公司2000年速动比率为()。
同业拆借是银行间的短期行为,不能反映金融市场上的资金供求状况。()
某社会工作服务中心想为某社区老人提供服务,并向区民政局申请经费资助。区民政局很支持这一想法,要求中心准备材料,并写明服务的必要性、可行性、目标、专业方法、服务成效以及经费预算等内容。这份材料被称为()。
心理和人的行为之间的关系表现为()。
某小学进行了期中考试。班主任在全班同学面前,公布排榜名次时,不问青红皂白,严厉地批评了这次没有考好的张某。张某心灵受到严重伤害,从此郁郁寡欢。请问该老师的行为是否违法?
A.helpmaintainenvironmentalqualityB.aspeopleclearlandsC.dependsoncountlessinteractionsD.byoverfishingandbypo
Australianchildrenarevisitingsocialmediawebsitesatanincreasinglyyoungerage,anewsurveysuggests,withoneinfive"
Floodscausebillionsofdollarsworthofpropertydamage______.
If|z|≤1,whichofthefollowingstatementsmustbetrue?Indicateallsuchstatements.
最新回复
(
0
)