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除哪项外，均为高渗性脱水的特点
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清热泻脾散的组成药物不包括
People from other countries often take America as the "land of opportunity". Americans, too, believe that the country gives no end of chances to those who want to open their own businesses in this amazing place. Today, many Americans are still trying hard to become small business people, although only one out of two remains in operation after the first two years.Many people start their small businesses for the wrong reasons. They want to get away from the paper work of their present jobs or to exchange the responsibility of their present jobs for free life styles. But more, not less, paper work and responsibility come with ownership of a small business.Thomas is the owner of the news magazine Mother Earth, which is now quite successful. He says that he had to work sixty hours without stopping when he was trying to bring out the first issue.Thomas had waited for years after he came up with the idea for Mother Earth. During that period of time, he collected as much information as he could about his business. He borrowed books from the library, talked to successful people in the field, and began planning carefully the amount of money and the kinds and numbers of supplies he would probably need. When he finally opened with a capital of $1,500, he set up his office in the kitchen and his printing press in the garage. Owing to his devotion to business, his talent, and his skill in management, Mother Earth now has a circulation of 300,000.Not all small businesses are doing as fine as Mother Earth is 50% of the 450,000 that start in America every year far. Still, 95% businesses in the US can be called "small". Altogether these businesses amount to 40% of America"s gross national product. According to the passage, which of the following is true of the small businesses in the US
小儿厌食脾运失健证的主证不包括
请详细阅读有关数据架构方面的描述，根据要求回答下面问题。[说明]某软件公司欲开发一个基于Web 2.0的大型社交网络系统。就该系统的数据架构而言，李工决定采用公司熟悉的数据架构，使用通用的商用关系型数据库，系统内部数据采用中央集中方式存储。该系统投入使用后，初期用户数量少，系统运行平稳。6个月后，用户数出现了爆炸式增长，系统暴露出诸多问题，集中表现在：(1)用户执行读写操作时，响应时间均变得很慢。(2)随着系统功能的扩充，原有数据格式发生变化，又出现新的数据格式，维护困难。(3)数据容量很快超过系统原有的设计上限，数据库扩容困难。(4)软件系统不断出现宕机，整个系统可用性较差。经过多次会议讨论，公司的王工建议采用NoSQL数据库来替代关系数据库，以解决上述问题。但李工指出NoSQL数据库出现时间不长，在使用上可能存在风险。公司技术人员对NoSQL数据库产品进行了认真测试，最终决定采用NoSQL数据库来替代现有的数据库系统。 请指出该系统采用NoSQL数据库时可能存在的问题。
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