单选题溃疡性肠结核的X线钡剂跳跃征是指

单选题 血尿患者，其尿红细胞形态如图所示(纵坐标为相对细胞数量，横坐标为血细胞比容)其血尿为 ( ) A、混合性血尿 B、非肾小球性血尿 C、肾小球性血尿 D、全程血尿 E、镜下血尿

单选题慢性支气管炎病人长期咳脓性痰合并下列哪种疾病较为多见?

单选题患者，女，70岁，反复咳嗽近30年，近一周因发热，咳嗽，咳痰，呼吸困难入院。查体：体温38．8℃，脉率：80次/分，血压140/80mmHg，未见颈静脉充盈，右中下肺叩浊，语音震颤减弱，呼吸音消失，左肺可闻及散在干湿性啰音，心界向左扩大，心律不整，心率100次/分，未闻杂音，腹（一），双下肢水肿。

单选题POX染色呈阴性的细胞为

单选题被称之为粒细胞酯酶的是

单选题可在胞质中形成嗜酸性包涵体的病毒是

单选题A．0．3％氧化镁B．1：5000高锰酸钾C．5％硫酸钠D．2％碳酸氢钠

单选题糖皮质激素是

单选题患者，女性，18岁，胸痛气短半个月。胸部透视显示左侧胸腔积液平第4肋间。在B超定位下行胸穿，送胸腔积液常规检查：Rivalta诚验阳性，白细胞0．6×10 9 ／L，腺苷脱氨酶：120U／L，最可能的诊断是

单选题下列炎症介质中，具有趋化作用的是( )(2011年)

单选题男性，19岁，反复左踝关节肿痛1年，偶有晨起背部不适，化验HLAL－B27(＋)，最可能的诊断是

单选题刚地弓形虫的侵入途径是 ( )

单选题男性，55岁，农民，因肌肉高度紧张和唾液分泌过多而入院。他妻子说他最近出现发热和寒颤，身体虚弱，拒绝进食，因不明原因脾气暴躁，难以自控。他是一个狂热的户外运动者和洞穴探险者。患者入院后不久，便有吞气症、恐水症和癫痫发作，神志清醒和幻觉交替。4天后，患者死亡，常规血和脑脊液细菌培养均为阴性。大脑尸检表明有内基小体的存在。

单选题哪些指标与甲状腺功能亢进症的病情呈平行关系

单选题Increasingly, historians are blaming diseases imported from the Old World for the great disparity between the native population of America in 1492--new estimates of which jump as high as 100 million, or approximately one-sixth of the human race at that time--and the few million full-blooded Native Americans alive at the end of the nineteenth century. There is no doubt that chronic disease was an important factor in the sharp decline, and it is highly probable that the greatest killer was epidemic disease, especially as manifested in virgin-soil epidemics. Virgin-soil epidemics are those in which the populations at risk have had no previous contact with the diseases that strike them and are therefore immunologically almost defenseless. That virgin-soil epidemics were important in American history is strongly indicated by evidence that a number of dangerous maladies--smallpox, measles, malaria, yellow fever, and undoubtedly several more--were unknown in the pre-Columbian New World. The effects of their sudden introduction are demonstrated in the early chronicles of America, which contain reports of horrible epidemics and steep population declines, confirmed in many cases by quantitative analyzes of Spanish tribute records and other sources. The evidence provided by the documents of British and French colonies is not as definitive because the conquerors of those areas did not establish permanent settlements and began to keep continuous records until the seventeenth century, by which time the worst epidemics had probably already taken place. Furthermore, the British tended to drive the native populations away, rather than to enslave them as the Spaniards did; so that the epidemics of British America occurred beyond the range of colonists' direct observation. Even so, the surviving records of North America do contain references to deadly epidemics among the native population. In 1616--1619 an epidemic, possibly of pneumonic plague, swept coastal New England, killing as many as nine out of ten. During the 1630's smallpox, the disease most fatal to the Native American people, eliminated half the population of the Huron and Iroquois confederations. In the 1820's fever ruined the people of the Columbia River area, killing eight out of ten of them. Unfortunately, the documentation of these and other epidemics is slight and frequently unreliable, and it is necessary to supplement what little we de know with evidence from recent epidemics among Native Americans. For example, in 1952 an outbreak of measles among the Native American inhabitants of Ungava Bay, Quebec, affected 99 percent of the population and killed 7 percent, even though some had the benefit of modern medicine. Cases such as this demonstrate that even diseases that are not normally fatal can have destroying consequences when they strike an immunologically defenseless community.Notes: disparity 差距。 virgin-soil处女地。 malady 疾病 chronicle 编年史。 tribute 贡品。 pneumonic plague肺鼠疫。confederation 同盟。 smallpox 天花。measles 麻疹。

单选题女性，45岁，过去无明确心脏病症状。体检曾发现有二尖瓣轻度脱垂，但无自觉症状。近2周因感冒后出现持续低热(体温38℃)，心率90次/分，律齐。心尖区可闻(2～3)/6级反流样杂音，血常规：白细胞1．0×10 9 /L，中性78％，核左移，红细胞3．5×10 12 /L，血红蛋白100g/L，眼结膜有瘀斑，尿蛋白(+)，眼底见Roth斑，血培养3次，其中两次可培养到草绿色链球菌。超声心动图未发现赘生物。关于该例的诊断，正确的是

单选题在治疗休克过程中，监护输液量及输液速度的最好的指标是

单选题导致急性左心功能不全的原因是

单选题原发性肺结核病的病变特点是( )(1993年)