尿HCG开始升高的孕周数是（）。_临床检验基础_全学科试题题库

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尿HCG开始升高的孕周数是（）。
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背景资料某开发商投资兴建办公楼工程，建筑面积9600m2，地下一层，地上八层，现浇钢筋混凝土框架结构，经公开招投标，某施工单位中标，中标清单部分费用分别是：分部分项工程费3793万元，措施项目费547万元。脚手架费用为336万元。暂列金额100万元。其他项目费200万元，规费及税金264万元，双方签订了工程施工承包合同。施工单位为了保证项目履约，进场施工后立即编制项目管理规划大纲，实施项目管理实施规划，制定了项目项目部内部薪酬计酬办法，并与项目部签订项目目标管理责任书。项目部为了完成项目目标责任书的目标成本，采用技术与商务相结合的办法，分别制定了A、B、C三种施工方案；A施工方案成本为4400万元，功能系数为0.34，B施工方案成本为4300万元，功能系数为0.32；C施工方案成本为4200万元，功能系数为0.34，项目部通过开展价值工程工作，确定最终施工方案，并进一步对施工组织设计等进行优化，制定了项目部责任成本，摘录数据如下：施工单位为了落实用工管理，对项目部劳务人员实名制管理进行检查。发现项目部在施工现场配备了专职劳务管理人员，登记了劳务人员基本身份信息，存有考勤、工资结算及支付记录。施工单位认为项目部劳务实名制管理工作仍不完善，责令项目部进行整改。列式计算项目部三种施工方案的成本系数、价值系数（保留小数点后3位），并确定最终采用哪种方案？

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Facts About FoodEverywhere on earth there are"food specialists"with opposite (or different) opinions on the best kinds of nutrition for various purposes. A lot of people believe that the healthiest diets are high in fiber ,vitamins ,and minerals but low in fat ,cholesterol ,sugar,and salt. Some nutritionists say the perfect eating plan contains mostly carbohydrates without much protein. In contrast , other scientists say people need high-protein meals with meat, chicken , fish , or milk products and only small amounts of grains , potatoes , breads , rice , and noodles. One famous diet plan allows only certain foods at certain times-protein with protein, carbohydrates with carbohydrates , fruits alone , and so on. Some eaters stay away from all meat and maybe even fish and milk products. They get their protein from plants , mostly beans. Others want only high-fiber food. These people may not eat white bread or white rice or even cooked vegetables. So what is the best way to eat and be healthy? The discussion of food facts will go on far into the future.The necessary substances and elements for human life and health are water, protein, carbohydrates ,fats , vitamins, and minerals. Most kinds of food contain some or all of the required nutrients , but these substances have different effects on people. Various ingredients and dishes affect the mind in different ways. and some kinds of nourishment have better effects on the brain than others. For instance. can broccoli increase brain power? Maybe so. Low levels of some of the B vitamins can cause a decrease in memory and thinking ability , nutritionists say, but dark green vegetables , like broccoli , contain a lot of these nutrients. Another example of a"memory helper"is lecithin-a substance from soybeans , also found in high-fiber foods like nuts and whole grains. High-protein foods influence the mind in more helpful ways than dishes high in sugar and carbohydrates. And the caffeine in coffee or tea may help thinking. Of course , its effects don't last long.In many places outside big cities , food with more than four legs is part of good, healthy home cooking. Fried or grilled ants are a tasty but expensive snack in Colombia , South America. In various parts of Mexico , over 300 types of insects serveas food. In southern Africa. many people like to eat at least one kind of caterpillar or worm. They enjoy it fried , dried , or cooked in tomato sauce. In Thailand , cooks create a spicy hot pepper sauce with water bugs. In Vietnam , grasshoppers filled with peanuts are a special dish. And in some regions of China,bugs are not only a part of meals but an important ingredient in medicine too. Most kinds of insects have high nutritional value. They contain a l0t of protein , vitamins , and minerals. Many people like their taste. They are everywhere on the planet. They add to the variety of people' s diets. For several reasons , insects are an important kind of food in the global diet , and they may become a more common ingredient in the future.The growing similarities in diet and eating habits around the world are influencing people of various cultures in different ways. For example, Western foods are damaging health in the industrialized island country of Japan. Instead of small meals of seafood , rice , and vegetables ,the typical Japanese diet ow includes large amounts of meat ,dairy products. And desserts like tiramisu , a rich Italian dish full of chocolate , cheese , and sugar. According to Japanese health researchers , such changes in eating habits are related to a great increase in health problems such as heart disease , strokes , cancer , and diabetes. On the other hand , the changing global diet is having the opposite effect on the people in the Czech Republic. The government of this European nation no longer supports meat and dairy products financially , so the cost of these foods is going up. In contrast , fresh fruits and vegetables are becoming more widely available from private markets and stands. Cooks are even serving salads to schoolchildren ,and families are eating healthier home-cooked meals. For these reasons ,fewer Czech men are having heart attacks , the women are l0sing a l0t of weight , and most people are living healthier lives.Decide whether the following statements are true or false. Write"T"for True and"F"for False on the Answer Sheet.6. The best way to eat is to eat only small amounts of carbohydrates.7. Most kinds of food contain fats , vitamins and minerals.8. High-fiber food like nuts and whole grains can influence people' s memory.9. Four legs insects serve as food in many places in the world.10. Japanese health researchers consider Italian tiramisu is the key factor that relates to health problems in Japan.

患者男性，28岁，发热1个月，伴心悸、胸痛、气促、下肢水肿1周。查体血压90／70mmHg，颈静脉怒张，心界向两侧扩大，心音低而遥远，左肩胛骨下闻及支气管呼吸音，肝大，肋下2cm，双下肢水肿。超声心动图心包腔内液性暗区1．0cm，X线检查示心影向两侧扩大最可能的诊断为（）