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
专升本
Merchant and passenger ships are generally required to have a life preserver for every person aboard and, in many cases, a certa
Merchant and passenger ships are generally required to have a life preserver for every person aboard and, in many cases, a certa
admin
2014-06-25
49
问题
Merchant and passenger ships are generally required to have a life preserver for every person aboard and, in many cases, a certain percentage of smaller sizes for children. According to United States Coast Guard requirements, life preservers must be simple in design, reversible, capable of being quickly adjusted to fit the uninitiated individual, and must be so designed as to support the wearer in the water in an upright or slightly backward position.
Sufficient buoyancy to support the wearer should be retained by the life preserver after 48 hour in the water, and it should be reliable even after long period of storage. Thus it should be made of materials resistant to sunlight, gasoline and oils, and it should not be easily set on fire.
The position in which the life preserver will support a person who jumps or falls into the water is most important, as its tendency to turn the wearer in the water from a face-down position to an upright or slightly backward position, with his face clear of the water, even when the wearer is exhausted or unconscious.
The method of adjustment to the body should be simple, and self-evident to uninitiated persons even in the dark under the confused conditions which follow a disaster. Thus, the life preserver should be reversible, so that it is nearly impossible to set it on wrong. Catches, straps, and ties should be kept to a minimum. In addition, the life preserver must be adjustable to the wide variety of shapes and sizes of wearers, since this greatly affects the position of floating and the self-righting qualities. A suitable life preserver should also be comfortable to wear at all times, in and out of the water, not so heavy as to encourage to take it off on shipboard while the ship in danger, nor so burdensome that it hinders a person in the water while trying to swim.
United States Coast Guard does NOT require the life preserver to the made______.
选项
A、with as few strings as possible
B、capable of being worn on both sides
C、according to each wearer’s size
D、comfortable and light to wear
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/aDUC777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
ManyAmericansarehappywiththiskindofmarriage.ButsomeotherAmericanshaveadifferentimpressionofmarriageandfamily
Inaclassroominanycountry,theteacherteachesmorethanartorhistoryorlanguage.Heorsheteachessomethingbehindthe
Thiscompositionisgood______somespellingmistakes.
TheInternetcanmakethenewsmoredemocratic,givingthepublicachancetoaskquestionsandseek【56】factsbehindstoriesand
Thisnovelisreallyworth______atleasttwice.
Videoorcomputergameshavethepowertoattractchildren.Mostchildrendonotfeeltheyhavemuchcontrolovertheirworld.I
Videoorcomputergameshavethepowertoattractchildren.Mostchildrendonotfeeltheyhavemuchcontrolovertheirworld.I
After15yearsabroad,hisbrothercamebackonly______hishometownseverelyinanearthquake.
FieldsacrossEuropearecontaminatedwithdangerouslevelsoftheantibiotics(抗生素)giventofarmanimals.Thedrugs,whicharei
Whatshouldyoudo,forexample,ifyoufindoutthatunderthefertilefieldsofafarmingcommunitythereisathickbedofco
随机试题
输液微粒污染
以下最符合风湿性疾病特点的是
一束自然光垂直穿过两个偏振片,两个偏振片的偏振化方向成45°角。已知通过此两偏振片后的光强为I,则入射至第二个偏振片的线偏振光强度为:
下列不属于专业承包资质类别的是()。
下列关于教学评价的表述,正确的是()。
河南某高校的讲师王芳准备在该校学报发表一篇她自己创作的论文,学报编辑部对该稿件进行审核后,要求在发表前必须对稿件的样式进行排版。请根据考生文件夹下“Word素材文件.docx”完成排版工作,具体要求如下:(1)在考生文件夹下,将“Word素材文件.doc
在考生文件夹下MAO文件夹中建立一个新文件夹YANG。
Darknessdoesn’ttroubleeats,fortheycansee______.
A、ScotlandB、IrelandC、thewholeofthewesterncountiesofEnglandD、areaaroundNewYorkCityD根据许多人旧有的认识,在美式英语中诸如“bird”等词中的[r
TherecessionistakingaserioustollonAmericanretail,bute-commercecouldemergeasawinner.Accordingtoanewrepor
最新回复
(
0
)