"We don't know where they go, but they disappear for about 10 days, and then they'll come back again. And without the CCTV, we never knew that."
[37]1000M速率及以上的宽带接入用户是指报告期末下行速率大于或等于1000Mbit/s的宽带接入用户。
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For UNSAT problems with 10 variables and 200 clauses it had the same issue as others: making up assignments.