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当前学科：医学科研方法学
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X线图像的形成主要是取决于人体组织结构之间有密度与厚度的差别。( )
此题为判断题(对，错)。
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普通湿法加工处理咖啡浆果的第一个步骤是（）。
Dream for Better We all have plans and dreams for a better, more ___1___ life. Yet only a small percentage of people actually achieve their ___2___ .A good question is: why? Recently, I was working with a young man who was ___3___ get on his feet. He had written out his goals, and he had powerful reasons why he wanted to achieve these goals. But after weeks of trying, he was still not much further along. So we took some time to try to understand what was holding him ___4___ .As we examined his average day, it became apparent to me that he was much too ___5__ .He was spending lots of time doing lots of different things. I ___6___ that most of what he was doing was not very important in the greater scheme of things. We did some exercises to ___7___ which activities were important, which ones were urgent and which ones was filling (or killing) time. As it turned out, most of the things he was doing throughout the day were filling time. He wasn't comfortable ___8___ he was very busy, so he created things that needed to be done. He was always working on something—yet at the end of the day, he had rarely accomplished any tasks to move him closer to the life he wanted. This behavior is fairly easy for an outside observer to spot but extremely difficult to self-diagnose. The ___9___ is to slow down and get comfortable with being still, with contemplating what we really want and whether our actions are suitable for our goals. Many of our activities are avoidance activities: we do things to fill up the time and thus avoid having to do more difficult tasks. It wasn't easy, but once the young man finally accepted that he needed to do less overall but more of the important things, his life took a dramatic ___10___ for the better. ___6___内的正确选项为（）
队列研究的主要用途是()A.计算暴露组与非暴露组的发病率或死亡率B.观察并评价干预措施的效果C.检验病因假设，评价预防效果，研究疾病的自然史D.提出病因假设E.描述疾病的分布特征
下列哪些疾病可引起肾小球性血尿（）
语译题:自古名贤治病，多用生命以济危急，虽曰贱畜贵人，至于爱命，人畜一也。损彼益己，物情同患，况于人乎！
患者，男性，40岁，HBsAg（+）30年，2个月来发热并右上腹痛。查体：体温39℃，肝肋下5cm，中等硬度，表面稍不平，压痛（+），甲胎蛋白（+）。为明确诊断下列哪项检查最无价值（）。
单项工程的技术经济指标是以适当计量单位所表示的的数量,除以下面哪一项而得出的结果。( )
烟囱吸力大小只与废气发生量有关。
控制性降压期间，脏器可能会对血流进行自身调节，此调节功能最弱的是（）
文氏现象