控制电位的使用电压为交流()及以下,或直流1000V及以下。 ["750V","1000V","500V"]
You use OSPF as your network routing protocol. You use the command show ip route and you see several routes described as O, O IA, O E1, and O E2. What routes are in your area? () [" O IA"," O E1"," O E2"," O"]
以下关于设计的知识的表述中,错误的是() ["知识是一种动态化的结构","知识需要不断积累","知识具有内在性和外在性的特点","知识是一种静态化的结构"]
成本调查在全国范围内进行,以()为主,()为辅。 ["重点调查,抽样调查","抽样调查,重点调查","典型调查,抽样调查","重点调查,典型调查"]
最能体现以太网传输质量的的指标是() ["吞吐率","时延","丢包","背靠背"]
虚拟化。