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国家开放大学 / 经济数学基础12

若，则（　）.

A.

B.

C.

D.

积分

经济数学基础12

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GCr15钢的最终热处理应该是（）A、淬火+低温回火B、氮化+淬火+低温回火C、渗碳+淬火+低温回火D、淬火+中温回火机械工程材料

( )是指企业生产所需要的一切物料(原料、燃料、零部件、备品备件、辅助材料等)在供应企业与生产企业之间流动的一系列物流及其管理活动。生产物流销售物流供应物流采购物流企业物流管理

点的三面投影展开后，正面投影与侧面投影的连线垂直于（）机械制图

梁上纵筋连接不能使用那种（）钢筋工程量计算

某企业聘请袁隆平为首席科学家,采用的是( )。公共关系学

题型描述: 十选项完形填空What do we mean by a perfect English pronunciation? In one sense there are as many different kinds of English as there are speakers of it. _ _ _ _ two speakers speak in exactly the same way. We can always hear differences _ _ _ _ them, and the pronunciation of English shifts a great deal in different geographical _ _ _ _ . How do we decide what sort of English to use as a model? This is not a question that can be _ _ _ _ in the same way for all foreign learners of English. _ _ _ _ you live in a part of the world like India or West Africa, where there is a long _ _ _ _ of speaking English for general communication purpose, you should tend to acquire a good _ _ _ _ of the pronunciation of this area. On the other hand, if you live in a country _ _ _ _ there is no traditional use of English, you must take as your model some form of native English pronunciation. It does not _ _ _ _ very much which form you choose. The most effective way is to take as your model the sort of English you can _ _ _ _ most often.1、 A. No B. None C. Nor D. Not 2、 A. between B. of C. among D. from 3、 A. areas B. parts C. countries D. spaces 4、 A. satisfied B. responded C. answered D. given 5、 A. If B. Whether C. Because D. When 6、 A. use B. habit C. tradition D. custom 7、 A. practice B. fashion C. method D. variety 8、 A. that B. what C. where D. which 9、 A. trouble B. affect C. care D. matter 10、 A. hear B. find C. notice D. listen统考英语B