含亚油酸和γ-亚麻酸,降血脂作用弱:
A.多烯脂肪酸B.普罗布考C.二者均是D.二者均否
参考答案:A
系统发生短路可能引起什么后果?
The network layer provides services to the transport layer.It can be based on either (67) .In both cases,its main job is (68) packets from the source to the destination.
In network layer,subnets can easily become congested,increasing the delay and (69) for packets.Network designers attempt to avoid congestion by proper design.Techniques include (70) policy,caching,flow control,and more.
The next step beyond just dealing with congestion is to actually try to achieve a promised quality of service.The methods that can be used for this include buffering at the client,trafficshaping,resource (71) ,and admission contr01.Approaches that have been designed forgood quality of service include integrated services(including RSVP),differentiated services,andMPLS.
69()
A.lowering the throughput
B.lowering the correctness
C.lowering the effectiveness
D.lowering the preciseness