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單項選擇題面向?qū)ο箝_發(fā)方法主要分為分析、設計和實現(xiàn)三個階段，下面屬于分析階段主要工作的是（）

A、定義子系統(tǒng)接口參數(shù)
B、編寫代碼
C、改進系統(tǒng)的性能
D、建立用例模型

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1.單項選擇題根據(jù)軟件生命周期的V模型，系統(tǒng)測試主要針對（），檢查系統(tǒng)作為一個整體是否有效地得到運行

A、概要設計
B、項目范圍說明書
C、項目管理計劃
D、需求規(guī)格說明書

2.單項選擇題The intention of the（）is to schedule, organize and control all activities to achieve the project goal eventually.no matter how difficult it is and what kind of risks are there.

A、project work breakdown
B、project security authentication
C、project management
D、project flowchart

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3.單項選擇題（）is a type of bar chart that illustrates a project schedule. It illustrates the start and finish dates of the terminal elements and summary elements of a project.

A、gantt chart
B、project histogram
C、milestone chart
D、project flowchart

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4.單項選擇題The uncertainty of an event is measured by its probability of occurrence and is inversely proportional to that. The more uncertain an event is. The more information is required to resolve uncertainty of that event. The amount of information is measured in （）

A、possibility
B、bits
C、bps
D、probability

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5.單項選擇題Information,in its most restricted technical sense,is a seque of symbols that can be interpreted as a message.ingormation can be recorded as signs,or transmitted as（）

A、symbols
B、message
C、signals
D、wave

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