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。
（）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。
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。
某企业计划研发甲、乙、丙、丁四种产品。每种产品必须依次由设计部门、制造部门和检验部门进行设计、制造和检验，而每个部门必须按同样的顺序处理这几种产品。各种产品各项工作所需的时间如下表： 只要适当安排好产品研究顺序，企业最快可以在（）天全部完成这四种产品的研发 A、84 。 B、86 。 C、91 。 D、93。
某饲养场饲养了某种动物，每只动物每天至少需要蛋白质200克、矿物质4克、维生素5毫克。市场上销售的甲乙两种饲料每公斤的营养成分及单价如下： 因此，饲养每只动物至少需要饲料成本（）元 A、6 。 B、8 。 C、10 。 D、12。
Each machine in the internet is assigned a unique network address,called（）,that is used to identify the machine for communication purposes
