问题
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3,8,11,20,71,() A.168;B.233;C.211;D.304
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1,1/2 , 6/11 ,17/29 , 23/38 ,()A.28/45 B.117/191 C.31/47 D.122/199
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23,12,25,13,27,()A.14 B.16 C.211 D.29
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5,11,23,47,95()。 A.190 B.191 C.192 D.196
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●把4个网络220.117.34.0/23、220.117.32.0/21、220.117.16.0/22和220.117.8.0/20汇聚成一个超网,其
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1 1/2 6/11 17/29 23/38 ( )A.28/45 B.117/191