单选题下列哪项是心力衰竭的基本病因A．人口老龄化B．急性心肌梗死急性期死亡率降低C．随年龄增加心肌细胞数减少D．原发性心肌舒缩功能障碍E．应用负性肌力作用的抗心律失常药物过多

单选题房性期前收缩与室性期前收缩最具鉴别意义的是

单选题Some oil companies plan to get rid of some of the pollution they produce by pumping it into rocks deep inside the Earth, where they say it will stay for thousands of years. Other people, though, aren't so sure this is advisable; environmental groups say that putting this pollution back into the Earth is a bad idea. When oil burns, it doesn't just produce heat: it also produces carbon dioxide. Carbon dioxide is a natural part of the air, but because people burn so much oil, there's too much carbon dioxide in the air. This extra carbon dioxide is pollution; some scientific studies show that carbon dioxide is one of the "greenhouse gases 'that is causing the Earth's temperature to rise. Environmentalists say that the oil companies' plans may not work. The oil companies say they are making sure that the gas will never escape, but environmentalists wonder how the oil companies can be so sure that the gas won' t seep into the air. They also point out that there's no way to check to make sure the gas isn't leaking. In addition, the environmentalists point out that the pumping costs money—for research and for equipment—that the oil companies should be spending on preventing pollution, rather than on just moving it someplace else. Another problem, say some people who are concerned about the Earth, is that if the oil companies find a cheap way to get rid of their pollution, they won' t look for new kinds of energy. These environmentalists say that energy companies should be researching ways to use hydrogen, wind power, and solar power instead of finding better ways to use oil. They argue that continuing to use oil means that we will still need to buy oil from other countries instead of producing our own cheap, clean energy. Environmentalists also say that burying pollution just pushes the problem into the future, rather than really solving it. They say that if the oil companies pump carbon dioxide into the rocks inside the Earth, it will be there for thousands of years, and that no one knows if this plan—even if it works—might turn into a pollution problem for all of us in the future. The oil companies insist that their plan is safe, and that putting the gas inside the Earth is a reasonable way to deal with it. They point out that there is a lot of room in the Earth for this extra gas, and that putting carbon dioxide inside the Earth means that the gas won' t be in the air, and if it' s not in the air, it won' t make the Earth warmer.

单选题A．寻常性间质性肺炎(UIP)B．脱屑性间质性肺炎(DIP)C．非特异性间质性肺炎(NSIP)D．急性间质性肺炎(AIP)E．隐源性机化性肺炎((COP)

单选题 典型肺炎链球菌肺炎体征描述，不正确的是 ( ) A、患侧呼吸运动减弱 B、患侧语颤减弱 C、患侧叩诊呈浊音 D、患侧听诊有支气管呼吸音、湿性啰音 E、累及胸膜时，可闻及胸膜摩擦音

单选题不依赖ACTH的Cushing综合征的病因是A．垂体微腺瘤B．肾上腺皮质癌C．小细胞肺癌D．胸腺癌

单选题女性，56岁，一周前上感伴咳嗽，三小时前突然略鲜血，量达200mL，无胸痛。既往有痰中带鲜血史。查体：体温37．3℃，血压正常，双肺叩清。X线胸片示双轨征及卷发样阴影，最可能的诊断为

单选题 关于结核性腹膜炎腹痛的特点，下列哪项除外? A、疼痛多位于脐周和下腹 B、早期腹痛比较明显，或可始终无疼痛 C、并发不完全性肠梗阻时，有阵发性腹痛 D、出现肌卫和板状强直 E、腹部压痛一般轻微

单选题 下列哪项不是成人腺垂体功能减退症的临床表现? A、体重减轻、食欲不振、恶心、呕吐、血压偏低 B、皮肤色素沉着，乳晕色素加深 C、怕冷、思睡、思维迟钝、精神淡漠 D、性欲减退、不育 E、低血糖发作

单选题男性患者，68岁。发热、关节痛、乏力、恶心10天，查尿Pro(＋＋)，RBC 10个／HP，WBC 5～6个／HP；血肌酐360μmoL／L，P－ANCA(＋)，胸片双下肺纹理增多。最可能的诊断为

单选题 疟疾的根治下列哪项错误 ( ) A、治疗对象为1～2年内有疟疾史，血中找到疟原虫者 B、疟疾抗体检查阳性者不必进行根治 C、可采用集体服药方式 D、常采用乙胺嘧啶和伯氨喹联合治疗 E、宜在流行高峰前1个月进行

单选题急性粒细胞白血病M3型的染色体异常的是

单选题下列疾病中，不会引起血性胸水的是

单选题冠状动脉“偷窃”现象可出现于

单选题患者，女，25岁。低热2周。查体：气管不偏，右侧胸部呼吸运动减弱，叩诊呈浊音，肺泡呼吸音减低，可闻及湿啰音，左肺未见异常。

单选题增大无效腔使实验动物的呼吸加深加快，与此调节活动无关的感受器是 A.肺牵张感受器 B.呼吸肌本体感受器 C.颈动脉窦和主动脉弓感受器 D.颈动脉体和主动脉体感受器

单选题下列关于胆盐肝肠循环的叙述，正确的是 A．胆盐在十二指肠被吸收 B．可刺激胆汁分泌 C．一次进餐后可循环6～8次 D．可促进胆囊收缩

单选题血管扩张剂在心功能不全患者中的应用，下列哪项不正确( )(1998年)

单选题 关于ACTH分泌节律，下列哪项描述是错误的? A、受CRF调节 B、受血皮质醇浓度的负反馈 C、有早低晚高的昼夜节律 D、分泌为波动性 E、应激时分泌明显增加

单选题患者女，60岁，五年来出现劳累后胸闷头晕，一小时前因胸闷自服硝酸甘油后感头晕加重，并出现短暂黑曚而来院，既往无高血压，无烟酒史，有病毒性心肌炎病史，查体：120/70mmHg，HR68次/分，双肺（一），心界扩大，心律不整，可闻及第三心音，呈奔马律。