单选题女，54岁，急性胰腺炎行胆囊造瘘、胰腺引流术后，仍禁食、输液、减压及抗感染治疗，并吸入高浓度氧，动脉血气分析为pH7.46、PaO2255mmHg、PaCO232mmHg，X线胸片示两肺有较广泛的点、片状阴影，心电图示窦性心动过速，此时提示病人可能存在A．急性心力衰竭B．阻塞性肺部病变C．术后肺不张D．肺部感染E．ARDS

单选题不应再次手术的胃大部切除术后并发症是

单选题临床表现为“肾病综合征”的15岁病人，经4周足量强的松治疗后，症状明显改善，其肾脏病理表现最可能为( )(1988年)

单选题A．Ⅰ／甲B．Ⅰ／乙C．Ⅱ／甲D．Ⅱ／乙E．Ⅲ／丙 以下切口分类和切口愈合等级分别是

单选题冠状动脉搭桥术后最常见的心律失常是（ ）

单选题阑尾炎时，阑尾穿孔是由于

单选题下列哪项症状不是输血所致的过敏反应( )(1991年)

单选题直肠息肉的主要症状是

单选题When Liam McGee departed as president of Bank of America in August, his explanation was surprisingly straight up. Rather than cloaking his exit in the usual vague excuses, he came right out and said he was leaving “to pursue my goal of running a company.” Broadcasting his ambition was “very much my decision,” McGee says. Within two weeks, he was talking for the first time with the board of Hartford Financial Services Group, which named him CEO and chairman on September 29. McGee says leaving without a position lined up gave him time to reflect on what kind of company he wanted to run. It also sent a clear message to the outside world about his aspirations. And McGee isn't alone. In recent weeks the No.2 executives at Avon and American Express quit with the explanation that they were looking for a CEO post. As boards scrutinize succession plans in response to shareholder pressure, executives who don't get the nod also may wish to move on. A turbulent business environment also has senior managers cautious of letting vague pronouncements cloud their reputations. As the first signs of recovery begin to take hold, deputy chiefs may be more willing to make the jump without a net. In the third quarter, CEO turnover was down 23% from a year ago as nervous boards stuck with the leaders they had, according to Liberum Research. As the economy picks up, opportunities will abound for aspiring leaders. The decision to quit a senior position to look for a better one is unconventional. For years executives and headhunters have adhered to the rule that the most attractive CEO candidates are the ones who must be poached. Says Korn/Ferry senior partner Dennis Carey:” I can't think of a single search I've done where a board has not instructed me to look at sitting CEOs first.” Those who jumped without a job haven't always landed in top positions quickly. Ellen Marram quit as chief of Tropicana a decade age, saying she wanted to be a CEO. It was a year before she became head of a tiny Internet-based commodities exchange. Robert Willumstad left Citigroup in 2005 with ambitions to be a CEO. He finally took that post at a major financial institution three years later. Many recruiters say the old disgrace is fading for top performers. The financial crisis has made it more acceptable to be between jobs or to leave a bad one. “The traditional rule was it's safer to stay where you are, but that's been fundamentally inverted,” says one headhunter. “The people who've been hurt the worst are those who've stayed too long.”

单选题原发性腹膜炎的病原菌多为

单选题患者，男性，46岁，血尿1周就诊。B型超声波发现右肾3cm×4cm实质肿瘤。一般情况良好。为进一步明确诊治，下列哪项检查没有意义

单选题溃疡型结肠炎最常累及（ ）

单选题糖尿病患者施行大手术前，需将血糖降至多少才较安全?

单选题慢性肾炎患者，近10天来出现厌食、恶心、乏力。来急诊时，首先宜查A．内生肌酐清除率B．HBsAgC．钡餐检查D．血尿素氮、肌酐、二氧化碳结合力E．不需化验检查

单选题X线平片绝大多数能显影的结石是

单选题Like many other aspects of the computer age, Yahoo began as an idea, (1) into a hobby and lately has (2) into a full-time passion. The two developers of Yahoo, David Filo and Jerry Yang, Ph. D candidates (3) Electrical Engineering at Stanford University, started their guide in April 1994 as a way to keep (4) of their personal interest on the Internet. Before long they (5) that their homebrewed lists were becoming too long and (6) . Gradually they began to spend more and more time on Yahoo. During 1994, they (7) yahoo into a customized database designed to (8) the needs of the thousands of users (9) began to use the service through the closely (10) Internet community. They developed customized software to help them (11) locate, identify and edit material (12) on the Internet. The name Yahoo is (13) to stand for "Yet Another Hierarchical Officious Orale", but Filo and Yang insist they selected the (14) because they considered themselves yahoos. Yahoo itself first (15) on Yang's workstation, "akebono", while the search engine was (16) on Filo's computer, "Konishiki". In early 1995 Marc Andersen, co-founder of Netscape Communication in Mountain View, California, invited Filo and Yang to move their files (17) to larger computers (18) at Netscape. As a result Stanford's computer network returned to (19) , and both parties benefited. Today, Yahoo (20) organized information on tens of thousands of computers linked to the web.

单选题A．甲状腺乳头状癌B．甲状腺滤泡状癌C．甲状腺髓样癌D．甲状腺未分化癌

单选题诊断脓毒症最可靠的依据是（ ）

单选题女性，62岁，因盆腔肿瘤切除术后12小时出现少尿(10ml／h)，血尿素氮15mmol／L，肌酐178μmol／L．尿比重1．025．尿钠13mmol／L，尿量减少最可能的原因是

单选题符合弥漫性系膜增生性肾小球肾炎临床表现的是