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建设项目规模中施工单项合同估算价在200万元以上的需强制招标
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Section C : Read the following passage. Fill each gap with the best answer from the four choices marked A, B, C and D.Most worthwhile careers require specialized training．Therefore, the1of a job should be made even before the choice of a curriculum in high school．Actually most people make several job choices during their working lives,2because of economic and industrial changes and partly to improve the position. Perfect jobs do not exist. Young people should3enter into a broad flexible training program that will4them for a field of work rather than for a single job．Unfortunately, many young people have to make career plans without benefit of help from a goodvocational counselor or psychologist knowing littleabout the professional world, or themselves for that matter. They choose their life work aimlessly. Some move from job to job. Others5to work in which they are unhappy and for which they are not6.One common mistake is choosing an occupation for its real or imagined prestige. Too many high school students or their parents choose the professional field, not7the relatively small proportion of workers in the professions or the extremely high educational and personal requirements. The imagined or real prestige of a profession or a “white-collar” job isno good reason for choosing it as life’s work.Besides, these occupations are not always well paid.8alarge proportion of jobs are in mechanical and manual work, the9of young people should give serious10to these fields.
GPS 导航系统中，对于驾驶员具有安全的导引方式：（ ）。
大比例尺地形测图,可采用的方法有（ ）。
举例说明GPS的应用
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