适合一个部门或一个单位组建的计算机网络是()。A、城域网 B、广域网 C、通信子网 发布时间:2017-06-22 21:32 │ 来源:www.tikuol.com 题型:单项选择题 问题: 适合一个部门或一个单位组建的计算机网络是()。A、城域网B、广域网C、通信子网D、局域网
题型:单项选择题 Traditional Internet access methods like dial-up were so slow that host computers were connected to the dial-up (71) at the customer premise over slow (72) ports.PPP was designed to run directly over these serial links. But with the advent of broadband Internet(73) technologies such as ADSL and cable modems there has been a considerable increase in the bandwidth delivered to the end users. This means that the host computers at the customer premise connect to the (74) or cable "modem" over a much faster medium such as Ethernet. It also means that multiple (75) can connect to the Internet through the sameconnection.A.access B. cache C.castD.storage 查看答案
题型:单项选择题 根据液位计的结构及原理的不同,液位计大致可分为以下几种类型()。A、玻璃板式液位计、浮标式液位计、差压式液位计、电式液位计B、玻璃板式液位计、浮标式液位计、沉筒式液位、电式液位计C、玻璃板式液位计、沉筒式液位计、浮球式液位计、电式液位计D、玻璃板式液位计、浮标式液位计、电溶液位计、电阻液位计 查看答案