| Villages in developing countries often
lack many things. Books, clean water, electricity. These shortages are
{{U}} (36) {{/U}} to {{U}} (37) {{/U}} . But a {{U}} (38)
{{/U}} kind of shortage is not easy to see. That is a shortage of
{{U}} (39) {{/U}} Many villages have no doctors, engineers or scientists.
They have no one who know {{U}} (40) {{/U}} to treat unusual medical
problems or design a new expert system. There’s a way to ease these problems.
They can do it with {{U}} (41) {{/U}} . In the past few years, computer
scientists around the world {{U}} (42) {{/U}} {{U}} (43) {{/U}}
they call expert systems. An expert system is a special kind of computer
program. In some {{U}} (44) {{/U}} , it can take the place of a human
expert. For example, an expert in {{U}} (45) {{/U}} system can A. engineers B. computers C. doctors D. experts [判断题]PLC是一个系统，DCS是一种控制“装置”。( )
A.正确 B.错误 [单选题]监护操作时，操作人在操作过程中不准有任何未经（ ）同意的操作行为。
A.A.工作票签发人 B.B.工作负责人 C.C.监护人 D.D.调控人员 [单项选择]A new era is upon us. Call it what you will: the service economy, the information age, the knowledge society. It is all translated to a fundamental change in the way we work. Already we’ve partly been there. The percentage of people who earn their living by making things has fallen dramatically in the Western World. Today the majority of jobs in America, Europe and Japan (two thirds or more in many or these countries) are in the service industry, and the number is on the rise. More women are in the work force than ever before. There are more part-time jobs. More people are self-employed. But the breadth of the economic transformation can’t be measured by numbers alone, because it is also giving rise to a radical new way of thinking about the nature of work itself. Long-held notions about jobs and careers, the skills needed to succeed, even the relation between individuals and employers—all these are being changed.
We have only to look behind us to get some sense of what may lie ah A. the difference between the employee and the employer has become insignificant B. people’s traditional concepts about work no longer hold true C. most people have to take part-time jobs D. people have to change their jobs from time to time [单项选择]
· You will hear a radio presenter interviewing a businessman called Jim O’Brien. · For each question 23-30, mark one letter (A, B or C) for the correct answer. · After you have listened once, replay the recording. 我来回答: 提交
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