【单选题】An administrator needs to configure a server to restrict mail traffic to an application server for security reasons. Which of the following techniques can be used to manage this?()
【单选题】As an increasing number of traffic regulation schemes are devised, a ______ driver finds himself diverted and forced into one-way systems which cause even greater delays than the traffic jams they are...
【简答题】In Britain, the old Road Traffic Act restricted speeds to 2 m.p.h. in towns and 4 m.p.h. in the country. Later Parliament increased the speed limit to 14 m.p.h. But by 1903 the development of the car ...
【单选题】Attempts to restrict parking in the city center have further _________ the problem of traffic congestion, and sometimes the traffic comes to a complete stop in some places.