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问题 单项选择题

高强度螺栓连接副在终拧以后，关于螺栓丝扣外露的数量说法正确的是（）

A.螺栓丝扣外露应为2~3扣，其中允许有5%的螺丝扣外露1扣或4扣

B.螺栓丝扣外露应为2~3扣，其中允许有10%的螺丝扣外露1扣或4扣

C.螺栓丝扣外露应为1~4扣，其中允许有5%的螺丝扣外露2扣或3扣

D.螺栓丝扣外露应为1~4扣，其中允许有10%的螺丝扣外露2扣或3扣

答案

参考答案：B

选择题

读数和写数，都要从（　　）起．

A．个位

B．十位

C．高位

D．低位
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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.

6（）
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