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【单选题】
It was the English scientist-philosopher Francis Bacon who said, 'Knowledge itself is power. 'This is an important dictum, but it has never been so true as today, with the advent of the Information Age. At the beginning of the Industrial Revolution, a country's comparative advantage depended largely on the natural resources it was endowed by Nature. People had to learn rudimentary skills when they joined manufacturing industries. They were called blue-collar workers, and they formed the majority, directed by a minority of managers. After World War II, the invention and increasing use of the microchip brought about great changes in the structure of man's social production. While the primary industry (agriculture) and the secondary industry (manufacturing) remain to be important, there have been rapid advances in the tertiary industry (services). And there is now talk of a fourth industry, the information industry. In the industrialized world, that is, in the US, Europe and Japan, about two thirds of jobs are now in the service sector, and the number is on the rise. Of course, there are roughly two different groups of job-holders in the service sector itself. The jobs in the first group, such as retail sales, food services, trucking and janitorial services, which are unskilled occupations, are low-wage, while in the second group are high-paid investment banker, computer programmers, high technicians, etc. , who are able to solve complicated problems by applying information. And the second group of service job-holders represent the future in economic development. It is argued that in future people should no longer be classified as white collar or blue collar, but rather as knowledge workers and non-knowledge workers. The knowledge workers cannot only read and write and perform. rote tasks, they must meet the basic requirement of computer literacy and constantly think up new ways to meet the changing demands of increasing productivity. More and more people are learning to be competent in using personal computers, digital communications and factory robots. Breakthroughs in bio-engineering, artificial intelligence, new materials, and still unimagined fields of technology and management will greatly advance productivity. It is people with the most advanced knowledge who will take the lead. Systems analysts, computer scientists and programmers, management analysts and inventors and developers are in most demand in the industrialized countries. In manufacturing itself, for example, there is a move away from standardized production and toward more flexible, customized manufacturing. Hence the growth of a large number of small factories, which are owned by a few multi-skilled and ever-retrained worker-engineer-managers, and equipped with precision, reset table machines working special materials like stainless steel and titanium. They are able to produce new-designed precision turned parts at the bidding of customers, often bigger factories, and their managers work with their hands and brains at the same time. The only way to greater knowledge is through education and training. Knowledge, as much as capital, material resources and sweat, has become an essential factor of production. The educational system of a society ought to enable its members to make a rapid transition to the above-described knowledge-based work. Otherwise, that society will inevitably lag behind. It has been the way of developed countries to automate out of existence low-productivity factories and jobs or transfer them to a country where costs are lower. In other words, the developed countries have been trying to keep higher wage jobs, while moving lower wage jobs to the developing countries. However, in the great worldwide movement to the Information Age, if a developed country should fail to bring up-to date its system of education and training, i
A.
there will be no more large factories
B.
mass-manufacturing will be shifted into tailored manufacturing
C.
there will be no differences among workers, engineers and managers
D.
standardized production will become under-standardized production
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【单选题】岩棉是用以下哪种岩石为主要原料制成的?(    )
A.
白云石
B.
石灰岩
C.
玄武岩
D.
松脂岩
【多选题】岩矿棉是一种优良的保温隔热材料,根据生产所用的原料不同,可分为岩棉和矿渣棉。其中岩棉是以 为主要原料。
A.
蛇纹石
B.
玄武岩
C.
辉绿岩
D.
工业废渣
【简答题】常用的过滤材料有( )、( )、( )和( )等。
【单选题】岩棉是以下列(    )种精选的岩石为主要原料,经高温熔融后,由高速离心设备加工制成的?
A.
白云岩    
B.
石灰岩    
C.
玄武岩    
D.
松脂岩
【判断题】岩棉主要以玄武岩为主要原料制成的无机纤维材料,具有导热系数小、吸声性好、不燃、化学稳定性好的特点,而且质量较轻。 ( )
A.
正确
B.
错误
【判断题】我国“三大名锦”中,江苏独占其二,分别是南京云锦和苏州刺绣。()
A.
正确
B.
错误
【简答题】岩棉是用以下哪种岩石为主要原料制成的?( )
【单选题】要制作好网络稿件标题,首先要做的事情是( )
A.
命题
B.
看稿
C.
立言
D.
修饰
【单选题】岩棉是用以下哪种岩石为主要原料制成的?( )[1分]
A.
白云石
B.
石灰岩
C.
玄武岩
D.
松脂岩
【多选题】在给水处理中,常常用天然或人工颗粒作为过滤材料,即所谓滤料。给水滤料必须符合的要求有:( )。
A.
有足够的机械强度,反冲洗时不会产生严重磨损和破碎
B.
化学稳定性高,不含有损健康的杂质
C.
有合适的粒径、良好的级配和较高的孔隙宰
D.
与滤池的承托层相匹配
E.
货源充足价格低廉
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