单项选择题
A.28楼、06:00-23:30 B.29楼、06:00-24:00 C.28楼、06:30-23:00
A.40个 B.41个 C.42个
A.8,9,25,26层 B.9,10,24,25层 C.8,9,24,25层
A.390 B.392 C.394
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