正确的集成测试描述包括（ ）。①集成测试也叫做组装测试，通常是在单元测试的基础上，将模块按照设计说明书要求进行组装和测试的过程②自顶向下的增殖方式是集成测试的一种组装方式，它能较早地验证主要的控制和判断点，对于输入输出模块、复杂算法模块中存在的错误能够较早地发现③集成测试的目的在于检查被测模块能否正确实现详细设计说明中的模块功能、性能、接口和设计约束等要求④集成测试需要重点关注各个模块之间的相互影响，发现并排除全局数据结构问题

Most operating systems have a standard set of ( ) to handle the processing of all input and output instructions.

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（ ）a method of obtaining early feedback on requirements by providing aworking model of the expected product before actually building it.

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The Unified Modeling Language is a standard graphical language for modeling object-oriented software. （ ） can show the behavior of systems in terms of how objects interact with each other.

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the （ ） is primarily concerned with acceptance of the deliverables.while quality control is primarily concerned with correctness of the deliverables and meeting the quality requirements specified for the deliverables．

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Competitive pricing help ensure that government authorities get the best （ ） for the public they serve.

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Estimating activitydurations uses information on activity scope of （ ） , required resource types, estimatedresource quantities, and resource calendars.

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The difference value between Budgeted Cost for Work Performed and Actual Cost for Work Performed is ( ).

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Schedule compression shortens the project schedule without changing the project scope,to meet schedule constraints,imposed dates,or other schedule objectives.Schedule compression techniques include crashing and（ ）.

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Competitive pricing，product （ ） And performance improvements result from competitive practices

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The _____ is a general description of the architecture of a workflow management system used by the WFMC，in which the main components and the associated interfaces are summarized.

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