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我区常见秋花类树种中，可开白花的有（），开红花的有（）。
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党的纪律处分有（）。
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甲将以95元购买期限为半年的贴债，贴债面额为100元，则按债券等价收益率计算，该投资者可以获得多少收益率？（ ）
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个人资产组合中贵金属资产的配置比例一般为多少？（）
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某学校地理组两位教师在讲《地球的自转与公转》一课时采用了不同的设计，一位老师利用自制的教具为学生模拟地球的自转和公转，另一位老师则利用多媒体课件演示这一过程。两位老师共同采用的教学方法是（）。
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During initial days of computing, software was largely developed by small groups of people. When this software was to be maintained by another set of people, it used to be a nightmarish experience. When large commercial projects were to be handled, it used to be analmost impossible task to keep the time and budget under control, and projects used to get delayed and many projects were abandoned halfway. There was no systematic procedure forthe software development; everything was done on ad hoc basis. This ad hoc approach led tothe 'software crisis'.Over the last few decades there has been a tremendous growth in information technologyand its impact on everyday life. Complex software systems have become critical to theoperation of many systems in areas such as banking, communications, manufacturing,power generation, and transportation. Progress in computer science and accumulated experience with industrial production of software have led to the emergence of software engineering as a separate discipline. The software engineering discipline has been defined as"the application of systematic, disciplined, quantifiable approaches to the development,operation, and maintenance of software. " that is, the application of engineering to software .The computer science discipline concerns with developing large applications. Software engineering covers not only the technical aspects of building software systems, but also management issues, such as directing programming teams, scheduling, and budgeting.For developing a software product, the development process is divided into differentstages. A convenient way of splitting the whole process is to divide the development into thefollowing five stages:Requirements Analysis & Specification: define the system requirements in detailDesign: specify system architecture and modules in detailCoding: produce source codeTesting: deal with unit testing and system testingMaintenance: fix bugs, enhance features and adapt across platforms.{二)Tell whether the following statements are true (T ) or false ( F) according to the passage A.(根据上立的内容判断下列句子的正误。 )36. During initial days of the development of software, everything was done in discipline. ( )37. The definition of software engineering is "the application of systematic, disciplined,quantifiable approaches to the development, operation, and maintenance of software. " ( )38. For developing a software product, you need design, coding and testing. ( )39. software engineering is the application of engineering to software. ( )40. Software engineering only covers the technical aspects of building software systems. ( ) .
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什么是底辟构造？底辟构造的特征是什么？
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右眼戴135º内置偏振滤镜，左眼戴45º内置偏振滤镜，右眼单独可见钟形盘视标（）。
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烧伤后急性感染期一般发生于（）
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下列不一定能加快成核速率的因素是（）