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(一) 某机电安装工程合同在履行过程中，业主要求施工承包单位加速施工，施工承包单位在监理工程师发出加速施工指令后的第30天向监理工程师发出索赔意向通知。随后，施工承包单位又向监理工程师提示了补偿经济损失的索赔报告及有关资料。索赔报告中详细准确地计算了损失金额及时间，并证明了客观事实与损失之间的因果关系。 合同实施过程中引起索赔的原因有哪些
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Passage ThreeQuestions 32 to 35 are based on the passage you have just heard,
When risk of death from heart attack is plotted on a graph against alcohol consumption, studies consistently show a U-shaped curve, which suggests that non-drinkers and heavy drinkers have higher rates of heart disease than light to moderate drinkers. The implication is that moderate drinking offers protection from heart disease. For years, doctors believed that the death rate among people who do not drink at all was artificially high because it included a substantial number of reformed drinkers, irreparably damaged by alcohol. However, more recent studies which separate life-long drinkers from abstainers have shown that abstainers are still at high risk. Studies have shown that moderate drinkers have higher levels of high-density lipoproteins (脂蛋白) in their blood. This is the "good" cholesterol that protects against heart disease. Alcohol also appears to reduce the risk of heart diseases. Though drinking alcohol in moderation undoubtedly brings some benefits, it is important not to play down the dangers of heavy drinking. Alcohol is related to a string of health problems including cirrhosis (硬化) of the liver, cancer of the mouth, high blood pressure and hemorrhage stroke. Some people believe that wine, in particular, has additional beneficial properties that set it apart from other alcoholic drinks. The French have significantly less heart disease than does any other industrialized nation except Japan. For example, in Toulouse, France, the annual heart disease death rate per 100,000 men is 78--barely a fifth of the number in Glasgow, Scotland. French doctors believe that the low rate of heart disease is a result of the fact that the French consume large quantities of wine. The relationship between alcohol consumption and the risk of developing cancer has also been studied. Population studies suggest that people who drink moderately are at less risk than those who do not drink at all. Again, wine may be largely responsible for the benefits. Other research suggests that drinking moderate amounts of alcohol also reduces the risk of catching everyday infections like colds. A recent study showed that drinking two units of alcohol dally can halve susceptibility to infections. Which of the following is the substance mentioned that helps to protect against heart disease
患者女性，25岁。牙龈和鼻出血7d入院。睑结膜及甲床苍白，四肢和躯干皮肤可见出血点和瘀斑。血红蛋白52g/L，白细胞 31×109/L，血小板20×109/L，血涂片可见大量幼稚细胞，细胞质中有大量紫红色颗粒，而且可见紫红色棒状物。最可能的诊断是
目前，P2P网络存在______、分布式非结构化、分布式结构化和混合式4种结构类型。
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