题目内容：
某大厦筹建处以大厦的名义与某旅行社签订了客房租赁合同，约定从开业时起出租30套客房给该旅行社，此合同因（ ）而无效。 
参考答案：
答案解析：
单选题：某大厦筹建处以大厦的名义与某旅行社签订了客房租赁合同，约定从开业时起出租30套客房给该旅行社，此合同因（ ）而无效。
- 题目分类：政策法规
- 题目类型：单选题
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It might take 30 to 40 years for computer newspapers to repl
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论述在金融危机下，我国宏观调控采取的财政政策和货币政策。
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