【名词&注释】
国有企业、缺铁性贫血(iron deficiency anemia)、股份公司(stock company)、有限责任公司(limited liability company)、法律依据、《公司法》(the company law)、法定代表人、法律意见、国有资产所有权、必须有(must have)
[单选题]For (1) service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new (2) for every packet sent. Instead,when a connection is established, a route from the(3) machine to the destination machine is chosen as part of the connection setup and stored in tables inside the (4) . That route is used for all traffic flowing over the connection, exactly the same way that the telephone system works.When the connection is released, the virtual circuit is also terminated. With connection-oriented service, each packet carries an (5) telling which virtual circuit it belongs to.
A. B