In Europe, where forestry is ecologically more advanced, the non-commercial tree species are recognized as members of native forest community, to be preserved as such, within reason。
第1题:
A.multipart-to-multipointEVC(E-LAN)
B.hubspokeEVC(E-Tree)
C.pointtopointEVC(E-Line)
D.rootedmultipointEVC(E-Tree)
E.point-to-multipointEVC(E-Tree)
第2题:
A.802.16a
B.802.16 d
C.802.16 m
D.802.16 e
第3题:
tree.add(6); tree.add(1); tree.add(1); 则遍历树集tree之后,可以输出1,1,6。()
第4题:
A.rootedmultipointEVC(E-Tree)
B.point-to-pointEVC(E-Line)
C.point-to-multipointEVC(E-Tree)
D.hubspokeEVC(E-Tree)
E.multipoint-to-multipointEVC(E-LAN)
第5题:
第6题:
1、tree.add(6); tree.add(1); tree.add(1); 则遍历树集tree之后,可以输出1,1,6。()