首页
登录
职称英语
We all know that the normal human daily cycle of activity is of some 7~8 ho
We all know that the normal human daily cycle of activity is of some 7~8 ho
游客
2023-11-14
18
管理
问题
We all know that the normal human daily cycle of activity is of some 7~8 hours’ sleep alternating with some 16~17 hours’ wakefulness and that, broadly speaking, the sleep normally coincides with the hours of darkness. Our present concern is with how easily and to what extent this cycle can be modified.
The question is no mere academic one. The ease, for example, with which people can change from working in the day to working at night is a question of growing importance in industry where automation calls for round-the-clock working of machines. It normally takes from five days to one week for a person to adapt to a reversed routine of sleep and wakefulness, Sleeping during the day and working at night. Unfortunately, it is often the case in industry that shifts are changed every week: a person may work from 12 midnight to 8 a. m. one week, 8 a. m. to 4 p. m. the next, and 4 p. m. to 12 midnight the third and so on. This means that no sooner has he got used to one routine than he has to change to another, so that much of his time is spent neither working nor sleeping very efficiently.
The only real solution appears to be to hand over the night shift to a number of permanent night workers. An interesting study of the domestic life and health of night-shift workers was carried out by Brown in 1957, She found a high incidence of disturbed sleep and other disorders among those on alternating day and night shifts, but no abnormal occurrence of these phenomena among those on permanent night work.
This latter system then appears to be the best long-term policy, but meanwhile something may be done to relieve the strains of alternate day and night work by selecting those people who can adapt most quickly to the changes of routine. One way of knowing when a person has adapted is by measuring his body temperature. People engaged in normal day-time work will have a high temperature during the hours of wakefulness and a low one at night; when they change to night work the pattern will only adjust gradually back to match the new routine and the speed with which it does so parallels, broadly speaking, the adaptation of the body as a whole, particularly in terms of performance. Therefore, by taking body temperature at intervals of two hours throughout the period of wakefulness it can be seen how quickly a person can adapt to a reversed routine, and this could be used as a basis for selection. So far, however, such a form of selection does not seem to have been applied in practice. [br] It is implied in the last paragraph that a low body temperature indicates that a person
选项
A、has just been awake from sleep.
B、can not work night shifts.
C、should go to sleep at once.
D、is less productive.
答案
D
解析
最后一段第三句已提到,在白天正常工作的人醒着时体温高,夜间体温低。其隐含义就是:人体温低时工作效率是很低的,由此可知答案为D 。
转载请注明原文地址:https://tihaiku.com/zcyy/3186028.html
相关试题推荐
Thenormalfood______ofmandependinpartontheamountofexternalworkhedoe
【B1】[br]【B13】A、newB、normalC、temporaryD、favouriteD本题考查语篇分析能力和背景知识。由于是回到他们的睡
Thenormalhumandailycycleofactivityisofsome7—8hours’sleepalterna
Thecoursenormallyattracts20studentsperyear,______uptohaftwillbefro
ThesymptomsofAlzheimer’sdiseasewerelongdismissedasnormalconsequenc
ThesymptomsofAlzheimer’sdiseasewerelongdismissedasnormalconsequenc
Weallknowthatthenormalhumandailycycleofactivityisofsome7~8ho
Weallknowthatthenormalhumandailycycleofactivityisofsome7~8ho
Weallknowthatthenormalhumandailycycleofactivityisofsome7~8ho
Readingtooneselfisamodernactivitywhichwasalmostunknowntothesch
随机试题
PassageOne(1)Distantindeedseemthedayswhenthetwogreatrivals
YoucanneverimaginewhatgreattroubleIhavehad_______thecustomertowithd
WhichofthefollowingisNOTmentionedinthepassage?[br][originaltext]
下列选项中,与“寄意寒星荃不察,我以我血荐轩辕”体现相同爱国情思的有()。
某试验室进行高速公路底基层用C-A-1水泥稳定碎石材料的组成设计,设计强度为4M
某青春期女孩,自述心慌、气短、头晕、眼花,医院确诊为缺铁性贫血,对改善其症状最好
( )是指当市场利率下降时,债券发行人能够以更低的利率融资,因此可以提前偿还高息
A.非那根 B.西咪替丁 C.阿司咪唑 D.苯海拉明 E.组胺治疗胃十二
无人值守变电站中配置远方召唤功能的继电保护和安全自动装置,其所有()、压板状态、
DNA双螺旋结构中的碱基对主要是A.腺嘌呤-尿嘧啶 B.腺嘌呤-胸腺嘧啶 C
最新回复
(
0
)