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
Design of all the new tools and implements is based on careful experiments with electronic instruments. First, a human "guinea p
Design of all the new tools and implements is based on careful experiments with electronic instruments. First, a human "guinea p
admin
2011-07-31
25
问题
Design of all the new tools and implements is based on careful experiments with electronic instruments. First, a human "guinea pig" is tested using a regular tool. Measurements are taken of the amount Of work done, and the buildup of heat in the body. Twisted joints and stretched muscles can not perform as well, it has been found, as joints and muscles in their normal positions. The same person is then tested again, using a tool designed according to the suggestions made by Dr. Tichauer. All these tests have shown the great improvement of the new designs over the old.
One of the electronic instruments used by Dr. Tichauer, the myograph (肌动记器), makes visible through electrical signals the work done by human muscle.
Another machine measures any dangerous features of tools, thus proving information upon which to base a new design. One conclusion of tests made with this machine is that a tripod (三脚架) stepladder is more stable and safer to use than one with four legs.
This work has attracted the attention of efficiency experts and time-and-motion-study engineer, but its value goes far beyond that. Dr. Tichauer’s first thought is for the health of the tool user. With the repeated use of the same tool all day long on production lines and in other jobs, even light manual work can put a heavy stress on one small area of the body. In time, such stress can cause a disabling disease. Furthermore, muscle fatigue is a serious safety hazard.
Efficiency is the by-product of comfort, Dr. Tichauer believes, and his new designs for traditional tools have proved his point.
It can be inferred from the passage that ______ .
选项
A、a stepladder used to have four legs.
B、it is dangerous to use tools
C、a tripod is safer in a tool design
D、workers are safer on production lines
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/9VlC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
看看我现在的糟糕处境!我早听从你的建议就好了。
Igothomeandfoundthatsomeone______tobreakintothehouse.
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofraysfromthesunandotherstars.Theatmosphe
Whatisthemainideaofthefirstparagraph?WhichofthefollowingcanbelearnedfromPara.2?
Ifitwereonlynecessarytodecidewhethertoteachelementarysciencetoeveryoneonamassbasisortofindthegiftedfewan
Whathedescribedasonlya______detailIthoughtwasthemostimportantpartoftheplan.
Thefoodweeatseemstohaveprofoundeffectsonourhealth.Althoughsciencehasmadeenormousstepsinmakingfoodmorefitt
Itwashisdoctorwhoadvisedthathe______hisjob.
SportsfansallovertheworldrecognizethenameMichaelJordan.FromTaiwantoTennessee.kidswearclotheswithhispictureo
Strongbondscanexistindatingrelationships.MycousinCandiceandherfriendLouisstarteddatingcasuallylastyear.Asthe
随机试题
ThatwassoseriousamatterthatIhadnochoicebut________thepolice.
对比剂应具备的条件,错误的是
患儿,女,5岁。其身高、体重均远远低于其同龄儿,为了解其骨骼发育情况,应做的检查是
中国公民张某为某大学教授,2009年1月—6月除了从所在大学取得工资薪金收入外,还取得以下几项收入:(1)2月10日受邀到境内某企业作演讲,主办方支付报酬5000元。(2)3月份有两篇论文在相关专业期刊上发表,分别取得稿酬3200元和4500元。(3
与巴赫同一年出生的另一位巴洛克时期的德国音乐家并著有作品《弥撒亚》的是弗朗克。()
2010年5月1日至2日,温家宝再次赴()地震灾区,深入村庄、学校、“方舱”医院、自来水厂和寺庙等,看望慰问灾区各族干部群众,了解灾后群众安置情况,指导灾区恢复重建工作。
企业:研发:生产:销售
若网络的各个节点通过中继器连接成一个闭合环路,则称这种拓扑结构为()。
Isitpossibletobebothfatandfit--notjustfitenoughtoexercise,butfitenoughtoliveaslongassomeonealotlighter?
A—securitiesbusinessK—stockcompanyB—stockexchangecorporationL—securitiesC—quotationM—commonstockD—shareN—preference
最新回复
(
0
)