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案例分析题关系数据库设计理论主要包括3方面内容，其中起核心作用的是（）。在关系模型的完整性约束中，实体完整性规则是指关系中（）。引用完整性规则要求（）。 引用完整性规则要求（）
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Tom Smith was a writer. (11)He wrote stories for magazines. One evening he could not find an end for a story. (12)He sat with his typewriter in front of him, but he had no ideas. (13)So be decided to go to the cinema.When he came back, he found that he had had a visitor. Someone had broken into his flat. The man had had a drink, smoked several of Tom’s cigarettes--and had read his story. The visitor left Tom a note: (15)"I have read your story and I don’t think much of it. (14) Please read my suggestions and then you can finish it. By the way, I am a thief. I am not going to steal anything tonight. But if you become a successful writer, I will return."Questions 11 to 15 are based on the passage you’ve just heard. How did Tom Smith writeHe wrote with a ().
某市某化工厂于2001年8月20日在该市城郊以协议出让方式取得一宗国有土地使用权，面积为21000m2，用途为工业，使用年限45年，未办理土地登记。2003年9月该化工厂进行技术改造，由于资金不足，需要以该土地作为抵押物向银行申请贷款，但由于未办理土地使用权设定登记，随后该化工厂于2003年9月20日委托某土地登记代理公司的土地登记代理人刘某代理土地登记申请手续。 问题 土地登记代理人刘某需要与该化工厂明确哪些方面的事项
B1型题 善治湿痹、筋脉拘挛、吐泻转筋的药物是（）
B1型题 生脉散之主要功用为（）
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