13,17,21,25,( ),33。A.27B.29C.31D.32
13,17,21,25,( ),33。
A.27
B.29
C.31
D.32
B.29
C.31
D.32
参考解析
解析:相邻数字之差为4,为等差数列,故空缺项应为25+4=29,选B。
相关考题:
单选题Which command configures an ATM PVC in a Bridged 1483 network?()Aatm pvc 33 0 33 aal5snapBatm pvc 33 0 33 aal5bridgeCatm pvc 33 0 33 bridge1483Datm pvc 33 0 33 1483bridge
单选题You would like toconfigure an ATM PVC with a virtual circuit identifier of 33 on virtual path 0.The PVC should use an unspecified bit rate and be encapsulated in the AAL5SNAP format. Which command accomplishes this goal?()Aatm pvc 0/33 aal5snapBatm pvc 33 0 33aal5snapCatm pvc 0/33 aal5snap ubrDatm pvc 33 0 33 aal5snap ubr