学科分类

已选分类 医学临床医学临床检验诊断学
单选题男,45岁。发作性呼吸困难5年,再发3天,伴咳嗽、咳白色泡沫痰,无咯血、发热,有甲状腺功能亢进症病史1年。查体:BP135/90mmHg,呼气延长,双肺可闻及哮鸣音。发生呼吸困难最可能
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单选题能使肺下界上升的有:  ①妊娠晚期  ②大量胸腔积液   ③大量腹水  ④肺气肿
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单选题 治疗糖尿病足的根本治疗方法是 ( ) A、宣传教育 B、抗生素治疗 C、控制血糖 D、神经营养治疗 E、运动治疗
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单选题 无创性血糖仪使用了多种新技术,但不包括( ) A、红外分光光度法 B、结合信号分析的近红外分光光度法 C、生物芯片技术 D、光-声学技术 E、聚光断层摄影技术
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单选题 下列哪项不属于三级预防思想的保健行为分类( ) A、病前保健行为 B、预防保健行为 C、病中保健行为 D、病后保健行为
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单选题谵妄的临床表现不包括
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单选题A.ALTB.ASTC.GGTD.LDH
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单选题以下不符合渗出液者为
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单选题粪便呈细条状常见于
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单选题 呼吸系统usG的非适应证为: A、矽肺 B、肺包虫病 C、炎性假瘤 D、胸腺瘤 E、纵隔畸胎瘤
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单选题 在pH7.4的碳酸盐-碳酸缓冲系统中,[HCO]/[HCO]的比值是 ( ) A、1:20 B、20:1 C、1:5 D、10:1 E、1:10
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单选题 血沉自动分析仪的测量原理是( ) A、光学阻档原理 B、温度变化原理 C、电动势变化原理 D、pH变化原理 E、电导变化原理
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单选题甲状腺肿大伴震颤和血管杂音,见于:
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单选题长期使用广谱抗生素的病人体检时常发现
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单选题A.清蛋白B.Tamm-Horsfall蛋白C.血红蛋白D.免疫球蛋白
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单选题 烟草中具有成瘾性的主要物质是( ) A、烟焦油 B、苯并花 C、尼古丁 D、一氧化碳
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单选题甲状腺I度肿大是指
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单选题 挑刺试验本卡针与皮肤呈什么角度进针点刺 A、15° B、30° C、45° D、60° E、90°
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单选题 Percoll分离液法常用来分离 A、红细胞 B、白细胞 C、单个核细胞 D、单核细胞和淋巴细胞 E、T细胞和B细胞
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单选题In 1993, I published a book, The Rage of a Privileged Class, whose central thesis was that even the most gifted African-Americans assumed that they would never crash through America's glass ceiling—no matter how talented, well educated, or hardworking they were. Few people of any race would claim that true equality has arrived; but so much has changed since Rage came out. Color is becoming less and less a burden; race is less and less an immovable barrier. My new research explores how that phenomenon is changing the way people of all races view the American landscape. I polled two groups of especially accomplished people of color. One is the African-American alumni of Harvard Business School. The other is the alumni of A Better Chance, a program, founded in 1963, that sends ambitious, talented youngsters to some of the nation's best secondary schools. Generations, I concluded from my study, mattered deeply—with their defining characteristics rooted in America's evolving racial dynamics. Generation 1, in this categorization, is the civil-rights generation—those (born before 1945) who participated in, or simply bore witness to, the defining 20th-century battle for racial equality. It is the generation of whites who, in large measure, saw blacks as alien beings and the generation of blacks who, for the most part, saw whites as irremediably prejudiced. Gen 2s (born between 1945 and 1969) were much less racially constrained—though they remained, in large measure, stuck in a tangle of racial stereotypes. Gen 3s (born between 1970 and 1995) saw race as less of a big deal. And that ability to see a person beyond color has cleared the way for a generation of Believers—blacks who fully accept that America means what it says when it promises to give them a shot. That new reality made itself clear when I compared black Gen 1 Harvard M. B. A. s with their Gen 3 counterparts. Seventy-five percent of Gen 1s said blacks faced "a lot" of discrimination, compared with 49 percent of Gen 3s. Twenty-five percent of Gen 1s thought their educational attainments put them "on an equal professional footing with white peers or competitors with comparable educational credentials," compared with 62 percent of Gen 3s. Ninety-three percent of Gen 1s saw a glass ceiling at their current workplaces, compared with 46 percent of Gen 3s. I am not about to make a statistical argument based on these numbers, but the message nonetheless seems clear. In the time since the Gen 1s came on the scene, a revolution has occurred. Those uptight suburbanites who couldn't imagine socializing with, working for, or marrying a "Negro," who thought blacks existed in an altogether different dimension, who could no more see dining with a black person than dining with a giraffe, have slowly given way to a new generation that embraces—at least consciously—the concept of equality. Americans have, in some substantial way, re-created each other—to an extent that our predecessors might find astounding.
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