一般按构造和施工要求,钢板中螺栓的最小允许端距为()。
A. 3d
B. 2d
C. 1.2
D. 1.5
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SECTION C Questions 6 to 8 are based on the following news. At the end of the news item, you will be given 10 seconds to answer each question. Now listen to the news. When did the country officially enter the European Union
SECTION B Questions 1 to 5 are based on an interview. At the end of the interview you will be given 10 seconds to answer each of the following five questions. Now listen to the interview. To search for work experience or practical learning, one must get ______.
慢性支气管炎急性发作期最常见的表现为
A. 中性粒细胞增多
B. 嗜酸粒细胞增多
C. 咳粘脓痰,咳嗽和痰量增多
D. 高热不退
E. 大咯血
Dangers of Using Computer Terminals Undoubtedly, the computer has greatly increased human being’s working capacity and intellectual capacity, but it also poses dangers to its users. The problems caused by the use of computers: a. more frequent incidence of abnormity during (1) ______ (1) ______ b. increased stress and (2) ______to vision, worsening short, sight (2) ______and an itching of the face. To solve this problem, one should take a rest fromtime to time and place computers at a location where there is (3) ______ (3) ______light and something else to look at. c. constipation resulting from long periods of sedentary (4) ______ (4) ______ d. (5) ______due to crouching over an inconveniently positioned (5) ______ keyboard. e. a sense of (6) ______owing to having puzzled over a problem too (6) ______ long. Precautions computer users are advised to take: Firstly, to make sure that there is an alternative source of light from thatof the (7) ______itself. (7) ______ Secondly, to rest their eyes frequently. In addition, to make sure the screen is properly (8) ______ (8) ______ Finally, to make sure that you are sitting in a comfortable position, toget up (9) ______and go out into the fresh air occasionally. Sitting still for (9) ______hours is likely to cause thrombosis and (10) ______ (10) ______