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问题 问答题 简答题

多台压滤机采用串联布置时有何优缺点？

答案

参考答案：优点：滤饼运输机共用，故所需运输设备少，厂房宽度小；

缺点：由于共用滤饼运输机，所以压滤机之间的操作相互受制约，当其中一台压滤机冲洗滤布时，影响其它压滤机的正常卸饼。

填空题

What is distance learning It means that you study on your own, at home or wherever suits you. Recently, the world famous Open University in the United Kingdom has designed a new style of distance learning, which is called (1) . The phrase "Open Learning" means you study (2) . You read course material, work on course activities, and write (3) . The word "Supported" means you have help (4) , the student services staff at regional centres, and centralized areas such as (5) . You can also contact other students through tutorials and (6) , the University’s online conferencing system, and events and clubs organized by (7) . Most distance learning courses use printed paper materials. They also include some (8) materials such as a CD, DVD or video. Many courses have a web site and an (9) . You’ll need access to a computer (10) to make use of these. The Open University can help its students buy a computer and (11) the cost of accessing the Internet.

With most distance learning courses, no (12) are required to study. of course, you have to be aged 18 when your course starts but there is no (13) . Currently the Open University has around (14) undergraduate and more than 30,000 postgraduate students, of which 10,000 have (15) . Nearly all students are studying (16) . About 70 per cent of undergraduate students are in (17) . More than 50,000 students (18) by their employers for their studies. Most distance learning courses (19) . Some of them are even available in other parts of the world. With over 25,000 of its students living outside the UK, the Open University is the (20) that offers distance learning throughout the world.

11（）
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单项选择题

我国自办的第一座广播电台是______。

A．哈尔滨无线广播电台
B．大陆报一中国无线电公司广播电台
C．上海新新公司广播电台
D．交通部天津广播无线电台
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