题目
A.172.18.128.0/21
B.172.18.128.0/22
C.172.18.130.0/22
D.172.18.132.0/23
第1题
A.172.18.128.0/21
B.172.18.128.0/22
C.172.18.130.0/22
D.172.18.132.0/23
第2题
A.172.18.128.0/21
B.172.18.128.0/22
C.172.18.130.0/22
D.172.18.132.0/23
第3题
(31)
A.172.18.128.0/21
B.172.18.128.0/22
C. 172.18.130.0/22
D.172.18.132.0/23
第4题
A.122.21,136.0/22
B.122.21.136.0/21
C.122.21.143.0/22
D.122.21.128.0/24
第5题
第6题
A.10.1.192.0/21
B.10.1.192.0/22
C.10.1.200.0/22
D.10.1.224.0/20
第7题
A.172.30.128.0/21
B.172.30.128.0/22
C.172.30.130.0/22
D.172.30.132.0/23
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