项目控制的依据，就是定义工程项目目标的各种文件，如项目建议书、可行性研究报告、项目任务书，但不包括设计文件、合同文件等
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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?（）
A. Routing contexts are implemented in a single routing process.
B. Routing contexts are implemented using multiple roubng processes.
C. Routing contexts are implemented as a single instance of several routing processes.
D. 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
A. 氢气
B. 空气（氧气）
C. 其他氧化剂
CO变换操作中，如原料气中的N2含量过高，会使炉温迅速升高，导致催化剂超温、甚至烧结。
A. 正确
B. 错误
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