皮皮学,免费搜题
登录
搜题
【简答题】
As civilization proceeds in the direction of technology, it passes the point of supplying all the basic essentials of life-food, shelter, clothes and warmth. Then we are faced with a choice between using technology to provide and fulfill needs which have now been regarded as unnecessary or, on the other hand, using technology to reduce the number of hours of work which a man must do in order to earn a given standard of living. In other words, we either raise our standard of living above that necessary for comfort and happiness or we leave it at this level and work shorter hours. I shall take it for granted that mankind has, by that time, chosen the latter alternative. Men will be working shorter and shorter hours in their paid employment. It follows that the housewife will also expect to be able to have more leisure in her life without lowering her standard of living. It also follows that human domestic servants will have completely ceased to exist. Yet the great majority of the housewives will wish to be relieved completely from the routine operations of the home such as scrubbing the floors or the bath of the cooker, or washing the clothes or washing up, or dusting or sweeping, or making beds. By far the most logical step to relieve the housewife of routine is to provide a robot which can be trained to the requirements of a particular home and can be programmed to carry out half a dozen or more standard operations, when switched by the housewife. 1. As civilization develops in the direction of technology,________. A. the basic essentials of life must be supplied B. it is important to supply the basic essentials of life C. it is no longer so important as it was in the past to supply all the basic essentials of life D. it is not necessary to supply the basic essentials of life 2. According to the author, we are faced with________. A. the choice of providing and fulfilling our needs B. the choice of using technology C. the choice of earning a standard of living D. a choice between using technology to provide and fulfill needs to reduce the number of working hours 3. What alternative will mankind have chosen in future? A. To leave our standard of living at this level and work shorter hours. B. To raise our standard of living. C. To fulfill needs which have been regarded as unnecessary. D. To lower our standard of living and work shorter hours. 4. Now most housewives wish to________. A. stop doing their housework B. do more housework to improve their life C. get rid of the heavy burden of their housework D. do only simple and light housework 5. It can be inferred that robots will be invented ____. A. to take the place of housewives B. to help manage a family C. to do the routine of housework instead of human D. to provide the daily necessities for man
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【判断题】轮系可分为定轴轮系和差动轮系两种。
A.
正确
B.
错误
【判断题】可以自由配置的视图称为向视图。
A.
正确
B.
错误
【单选题】ZHDY1-2*一质量为M的小球,由顶端沿质量为49M的圆弧形木槽自静止下滑,圆弧形槽的半径为R(如图所示)。忽略所有摩擦, 重力加速度为g,小球刚离开圆弧形槽时速度为( )
A.
(1)
B.
(2)
C.
(3)
D.
(4)
【多选题】定轴轮系可分为( )两类
A.
平面定轴轮系
B.
端面定轴轮系
C.
空间定轴轮系
D.
法面定轴轮系
【简答题】定轴轮系可分为( )两类。A. 平面定轴轮系 B.端面定轴轮系 C.空间定轴轮系 D.法面定轴轮系
【简答题】可以自由配置的视图称为 。
【简答题】翻译句子:现在可以笑了。
【单选题】依据肌丝滑行理论,骨骼肌收缩时表现为
A.
明带缩短,H带不变
B.
明带缩短,H带变窄或消失
C.
暗带缩短,H带消失
D.
暗带长度不变,H带不变
【判断题】可以自由配置的视图称为自由视图。
A.
正确
B.
错误
【简答题】一质量为m的小球,由顶端沿质量为M的圆弧形木槽自静止下滑,设圆弧形槽的半径为R(如图所示)。忽略所有摩擦,求小球刚离开圆弧形槽时,小球和圆弧形槽的速度各是多少?
相关题目: