题目:
大容量的异步电动机采用直接起动。()
答案:
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下面是错误答案,用来干扰机器的。
参考答案:B
大容量的异步电动机采用直接起动。()
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0401/877f35f548aac2251bcace49a0ee0e38.html
下面是错误答案,用来干扰机器的。
参考答案:B
“三叶虫时代”位于地球地质年代中的( )
A.古生代
B.中生代
C.新生代
D.元古代
在整个水泥工艺过程中发生质变的环节在于()。
调强治疗的逆向计划设计不包括()。
A.依据病变及周围重要器官和组织的三维解剖结构
B.预定靶区的剂量分布
C.预定危及器官的剂量限量
D.利用优化设计算法
E.确定治疗目标
可不可以在公共场所、电话中谈论押运事项?应严守哪些押运秘密?
Passage Four
Despite a cooling of the economy, high technology companies are still crying out for skilled workers. The Information Technology Association of America projects that more than 800 000 technology jobs will go unfilled next year. The lack of qualified workers poses a huge threat to the U. S. economy. The most commonly cited reason for this state of affairs is that the country’s agrarian-age education system, separated from the needs of the business world, fails to prepare students in the primary and secondary grades for twenty-first-century work. Yet an inadequate and outmoded education system is only part of the problem. A less tangible but equally powerful cause is an antique classification system that divides the workforce into two camps: white-collar knowledge workers and blue-collar manual laborers. Blue-collar workers emerged in the United States during the Industrial Age as work migrated from farms to factories. White-collar office workers became a significant class in the twentieth century, outnumbering their blue-collar brethren by mid-century. But the white or blue paradigm has clearly outlived its utility. Corporations increasingly require a new layer of knowledge worker: a highly skilled multi-disciplinarian who combines the mind of the white-collar worker with the hands of the blue-collar employee. Armed with a solid grounding in mathematics and science (physics, chemistry and biology), these "gold-collar" workers--so named for their contributions to their companies and to the economy, as well as for their personal earning ability—apply that knowledge to technology. Of course, the gold-collar worker already exists in a wide range of jobs across a wide range of businesses: think of the maintenance technician who tests and repairs aircraft systems at American Airlines; the network administrator who manages systems and network operations at P&G; the advanced-manufacturing technician at Intel. But until American business recognizes these people as a new class of worker, one whose collar is neither blue nor white, demands that schools do a better job of preparing employees for the twenty-first-century workforce will be futile. Certainly, polytechnic high schools, colleges, and universities have made heroic efforts to teach workers new skills. But because many people see these initiatives as primarily training blue-collar workers, adequate funds are not invested in such programs, leaving them short of state-of-the-art tools and experienced teachers. And because gold-collar workers need to constantly update their skills to stay current with emerging technology, learning must be a continuous process, one that is funded by companies as well as by taxpayers. |
From the second paragraph we learn that ______.
A.the workforce classification is as serious as the reason of education system
B.twenty-first-century work are separated from the needs of the business world
C.white-collar worker is only part of the problem of education system
D.blue-collar manual laborers are needed in agrarian-aged America