第1题
A.255.255.255.192
B.255.255.255.224
C.255.255.255.240
D.255.255.255.252
第2题
A ) 255.255.255.0
B ) 255.255.255 . 128
C ) 255.255.255 . 192
D ) 255.255.255.240
第3题
A ) 255.255.255.0
B ) 255.255.255 . 128
C ) 255.255.255 . 192
D ) 255.255.255.240
第4题
A) 255.255.255.0
B) 255.255.255.128
C) 255.255.255.192
D) 255.255.255.240
第5题
A)255.255.255.0
B)255.255.255.128
C)255.255.255.192
D)255.255.255.240
第6题
A.255.255.255.0
B.255.255.255.128
C.255.255.255.192 >>
D.255.255.255.240
第7题
A.255.255.255.0
B.255.255.255.128
C.255.255.255.192 >>
D.255.255.255.240
第8题
A.255.255.255.0
B.255.255.255.128
C.255.255.255.192
D.255.255.255.240
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