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
70
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、missing
B、grown
C、big
D、fresh
答案
A
解析
该句是作者给出的一系列忠告之一,即,认真观察地形,注意明显的雪崩路径:没有植物或植物被毁坏的地方。选项B、C、D均不符合句义。
转载请注明原文地址:https://kaotiyun.com/show/PUhd777K
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
BetterControlofTBSeenIfaFasterCureIsFoundTheWorldHealthOrganizationestimatesthataboutone-thirdofallpeoplea
Accordingtothepassage,someengineersaretryingtoimprovethehandlebarsbecauseParagraph3mainlydiscusses
Inordertoimproveourstandardofliving,wehavetoaccelerateproduction.
FriendsMayBeKeytoLivingLongerLookingforthesecretofalonglife?Lookcloselyatyourfriends.Newresearchsugges
Beforeexercise.You’dbetterdosomethingtowarmupfirst.Catsliketostretchbecauseitmakesthemfeelcomfortable.
Dyslexia(阅读障碍)Asmanyas20%ofallchildrenintheUnitedStatessufferfromsomeformofthelearningdisordercalleddys
Thetownisfamousforitsmagnificentbuildings
CarThievesCouldBeStoppedRemotely(遥远地)Speedingoff(超速行驶)inastolencar,thethiefthinkshehasgotagreatcatch.But
HisnoveldepictsanambitiousChinese.
FirstAidFirstaidisemergencycareforavictimofsuddenillnessorinjuryuntilmoreskillfulmedicaltreatmentisavail
随机试题
垂体ACTH细胞腺瘤引起
在活动进行到一个段落时为了解、把握其活动成效而开展的评估是
2000版ISO9000族标准中的质量管理的基本原理有()。
减少求助者自我探索的因素是()。
宣传教育是指公安机关及人民警察根据群众工作的目标,运用不同的表现方式传播相关的信息,以影响群众观念,引导其行为的社会活动。下列行为符合宣传教育工作要求的是()。
公安机关在新世纪、新阶段应担负的政治和社会责任是()。
下列不与我国接壤的国家是()。
阐述传统心理物理实验中常见的误差及控制方法。
十一届三中全会以来,我党制定的一系列正确的路线、方针、政策促进了我国经济的迅速发展,这说明()。
ItwasadaythatMichaelEisnerwouldundoubtedlyliketoforget.SittinginaLosAngeleswitnessboxforfourhourslastweek
最新回复
(
0
)