支抗设计在与矫治牙的同一牙弓内,利用一些牙作为支抗而使其他一些矫治牙移动,这种支抗是
A.颌间支抗
B.黏膜支抗
C.枕部支抗
D.颌内支抗
E.颌外支抗
参考答案:C
过点(3,1)在两坐标轴上的截距相等的直线方程是( )。
Open Shortest Path First(OSPF)is a (71) routing algorithm that (72) work done on theOSI IS-IS intradomain routing protocol. This routing, as compared to distance-vector routing,requires (73) processing power. The (74) algorithm is used to calculate mutes. OSPFrouting table updates only take place when necessary, (75) at regular intervals.
A.Bellman-Ford
B.Ford-Fulkerson
C.Dijkstra
D.RIP