[问答题] 操作系统的功能是什么？

As an experienced technician, you are responsible forT echnical Support in your company. One of the trainee implement RIP routing contests in MPLS VPN. How to respond?（） [" Routing contexts are implemented in a single routing process."," Routing contexts are implemented using multiple roubng processes."," Routing contexts are implemented as a single instance of several routing processes."," Routing contexts are implemented as several instances of a single routing process."] 燃烧通常是指可燃物质跟（）混合，在一定热源下，瞬间燃烧，并产生光和热的现象 ["氢气","空气（氧气）","其他氧化剂"] 申购 若须设计多个场景的动画，必须打开场景面板，按（）热键可以打开场景面板。   ["shift + f2","ctrl + f2","shift + f9","ctrl + f9"] 韵摄 操作系统的功能是什么？