根据软件生命周期的V模型，系统测试主要针对（），检查系统作为一个整体是否有效地得到运行

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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（）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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