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
105
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、increase
B、reduce
C、improve
D、remove
答案
B
解析
选项A不符合句子的意思;C不能和risk搭配;D也不符合句子的意思,因为不可能完全消除雪崩的隐患。
转载请注明原文地址:https://kaotiyun.com/show/DUhd777K
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
HospitalMistreatmentAccordingtoastudy,mostmedicalinternsreportexperiencingmistreatment,includinghumiliationbyseni
HospitalMistreatmentAccordingtoastudy,mostmedicalinternsreportexperiencingmistreatment,includinghumiliationbyseni
AIntroductiontoSingaporeBEducationCEconomyDStateSystemofSingaporeEHistoryofSingaporeFLandandClimate
TherewerenohumanbeingsontheearthduringtheIceAge.Accordingtothepassage,beforetheIceAgethecontinentalshelf
Thiskindofanimalsareonthevergeofextinction,becausesomanyarebeingkilledfortheirfur.
CharterSchoolsAmericanpubliceducationhaschangedinrecentyears.OnechangeisthatincreasingnumbersofAmericanparents
TheDiscoveryofPenicillin(青霉素)Intheautumnof1928,aScottishscientistAlexanderFlemingwassearchingforasubstance
Themakingofweathervanesdevicesfixedonthetopofbuildingstoshowdirectionsofthewindisanancientskill,goingback
SincetheGreatDepression,theUnitedStatesgovernmenthasprotectedfarmersfromdamagingdropsingrainprices.
TheboatsoftheearliestvoyagerstotheNorthAmericancontinentwereexceptionallywellbuilt.
随机试题
中国共产党在长期的人才选拔过程中主要采用的人才选拔制度是()
男性,40岁。中上腹饥饿性隐痛反复发作10年,伴反酸、暖气,进食和服用抑酸剂可缓解。如该患者进行腹部检查,最具诊断价值的体征是
背景资料某一储油库工程,施工图纸已齐备,现场已完成三通一平工作,满足了工程开工的条件。该工程由银行贷款和企业自筹资金相结合,解决了资金问题,实行邀请招标发包。业主与承包单位签订的合同总工期为10个月,计300个日历天,按国家工期定额规定
如果关于x的不等式组的整数解仅有1,2,那么适合这个不等式组的整数a,b组成的有序数对(a,b)共有____________个.
属于法的规范功能的是()。
世界上最早实行宪政的国家是()
商品由两个因素构成,它们是()
关系数据库中有3种基本操作,将具有共同属性的两个关系中的元组连结到一起,构成新表的操作称为()。
下列叙述中,不正确的是
在考生文件夹下打开Excel.xlsx文件:将工作表sheetl的Al:D1单元格合并为一个单元格,文字居中对齐,计算“增长比例”列的内容,增长比例=(当年人数一去年人数)/去年人数(百分比,小数位两位),将工作表命名为“招生人数情况表”。
最新回复
(
0
)