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In the process of communication requirement analysis, the project manager should consider the number of potential communication channels or paths as an indicator of the complexity of a project's communication. According to Metcalfe's Law, a project with 10 stakeholders has（）potential communication channels.

The TCP protocolis a （）layer protocol. physical。 network。 transport。 application。 The connection between two networks from an intemet is handled by a machine known as a（） bridge。 server。 router。 switch。 The parties to government procurement refer to the principal entities of all kinds that enjoy rights and undertake obligations in government procurement, including the procuring entities, the （）and the procuring agencies. users。 servers。 producers。 suppliers。 Quality planning tools are often used to help plan effective quality management activities . （）is one of such tools, which involves company actual or planned project practices to those or other projects to generate ideas for improvement and to provide a basis by which to measure performance. Benchmarking。 Quality metric。 Quality checklist。 Brainstornung。 根据《中华人民共和国船舶及其有关作业活动污染海洋环境防治管理规定》，燃油供受单证应当包括（）。 ①受油船船名； ②船舶识别号或国际海事组织编号； ③作业时间、地点； ④燃油供应商的名称、地址和联系方式； ⑤燃油种类、数量、密度和含硫量； ⑥燃油加载计划。 ①②③④。 ①②③⑤。 ①②③④⑤。 ①②③④⑤⑥。

In the process of communication requirement analysis, the project manager should consider the number of potential communication channels or paths as an indicator of the complexity of a project's communication. According to Metcalfe's Law, a project with 10 stakeholders has（）potential communication channels.