般站观测环境的技术要求有哪些？
参考答案：
一、地面气象观测场围栏（外缘）与四周孤立障碍物的距离，至少是该障碍物高度的3倍以上；两孤立障碍物最近的横向距离不得小于30米。距离成排障碍物距离至少是该障碍物高度的8倍以上；
二、一般气象站周围的工程设施边缘与观测场围栏的距离要求：铁路路基必须为200米以远（电气化铁路路基为100米以远）；公路路基必须为30米以远；水库等大型水体（最高水位时）必须为50米以远；
三、经省级气象局论证确定对观测资料准确性有影响的各种源体，其边缘与一般气象站边缘的距离必须为300米以远；
四、观测场不得搬到离地面的任何高度进.
PART FOUR WRITING SECTION A（10 points） Directions: Read the following passage．Fill in the numbered blanks by using the information for the passage． Write NO MORE THAN 3 WORDS for each answer． Television the most popular and persuasive of modern technologies, marked by rapid change and growth – is moving into a new ear, an era of extraordinary sophistication and versatility, which promises to reshape our lives and our world. It is an electronic revolution of sorts, made possible by the marriage of television and computer technologies. The world “television”, derived from its Greek (tele: distant) and Lation (vision: sight) roots, can literally be interpreted as sight from a distance. Very simply put, it works in this way: through a sophisticated system of electronics, television provides the capability of converting an image (focused on a special photoconductive plate within a camera) into electronic impulses, which can be sent through a wire or cable. These impulse, when fed into a receiver (television set), can then be electronically reconstituted into that same image. Television is more than just an electronic system, however. It is a means of expression, as well as a vehicle for communication. The field of television can be divided into two categories determined by its means of transmission. First, there is broadcast television, which reaches the masses through broad – based airwave transmission of television signals. Second, there is no broadcast television, which provides for the needs of individuals or specific interest groups through controlled transmission techniques. Traditionally, television has been a medium of the masses. We are most familiar with broadcast television because it has been with us for about thirty-seven years in a form similar to what exists today. During those years, it has been controlled, for the most part, by the broadcast networks, ABC, NBC, and CBD, who have been the major purveyors（供应商）of news, in formation, and entertainment. These giants of broadcasting have actually shaped not only television but our perception of it as well. We have come to look upon the picture tube as a source of entertainment, placing our role in this dynamic medium as the passive viewer. 71.
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