一辆汽车沿坡角为α的斜坡前进500米，则它上升的最大高度为（ ） A．500sin

患者女，48岁。右上腹突发持续性疼痛伴寒战、发热及恶心、呕吐13小时。既往有原发性肝胆管结石病史。查体：体温39.8℃，呼吸24次/分，脉搏108次/分，血压78/60mmHg。神志淡漠，烦躁不安，全身皮肤、巩膜黄染，皮肤有抓痕。剑突下和右上腹有压痛及反跳痛，腹肌紧张不明显。尿量<20ml/h。实验室检查：WBC3.5×10⁹/L，N0.85，中性粒细胞核左移。血、尿淀粉酶正常，血清总胆红素160μnol/L，ALP298U/L，ALT80U/L。

最有效的治疗措施是（）。

A.输血、输液补充血容量

B.手术解除梗阻、引流

C.全身抗感染治疗

D.纠正酸中毒

E.维持肝、肾功能

甲状腺手术用硬膜外麻醉，下列哪条不恰当()

A．颈都硬膜外麻醉对呼吸功能有影响

B．可完全消除甲状腺牵拉痛

C．应慎重选用，并做好应急准备

D．术前病情不稳定，预防性处理甲亢危象有一定效果

E．心交感神经被阻滞，有利于甲亢病人的脉搏平稳

Attacking an increasingly popular Internet business practice, a consumer watchdog group Monday filed a complaint with the Federal Trade Commission, asserting that many online search engines are concealing the impact special fees have on search results by Internet users. Commercial Alert, a 3-year-old group founded by consumer activist Ralph Nader, asked the FTC to investigate whether eight of the Web’s largest search engines are violating federal laws against deceptive advertising.
The group said that the search engines are abandoning objective formulas, to determine the order of their listed results and selling the top spots to the highest bidders without making adequate disclosures to Web surfers. The complaint touches a hot-button issue affecting tens of millions of people who submit search queries each day. With more than 2 billion pages and more than 14 billion hyperlinks on the Web, search requests rank as the second most popular online activity after E-mail.
The eight search engines named in Commercial Alert’s complaint are. MSN, owned by Microsoft; Netscape, owned by AOL Time Warner; Directhit, owned by Ask Jeeves; HotBot and Lycos, both owned by Terra Lycos; Altavista, owned by CMGI; LookSmart, owned by LookSmart; and Iwon, owned by a privately held company operating under the same name.
Portland, Ore. -based Commercial Alert could have named more search engines in its complaint, but focused on the biggest sites that are auctioning off spots in their results, said Gary Ruskin, the group’s executive director.
"Search engines have become central in the quest for learning and knowledge in our society. The ability to skew (扭曲) the results in favor of hucksters (小贩) without telling consumers is a serious problem," Ruskin said. By late Monday afternoon, three of the search engines had responded to The Associated Press’ inquiries about the complaint. Two, LookSmart and AltaVista, denied the charges. Microsoft spokesman Matt Pilla said MSN is delivering" compelling search results that people want."
The FTC had no comment about the complaint Monday. The complaint takes aim at the new business plans embraced by more search engines as they try to cash in on their pivotal (关键的) role as Web guides and reverse a steady stream of losses. To boost revenue, search engines in the past year have been accepting payments from businesses interested in receiving a higher ranking in certain categories or ensuring that their sites are reviewed more frequently.

The consumer group complained about ______.

A．special fees that Internet users were charged

B．Federal Trade Commission

C．Commercial Alert

D．online search engines

品牌的维持策略包括（）。

A.产品领先策略

B.服务领先策略

C.有效沟通策略

D.提高品牌转换成本策略

当我们对某个投资方案进行分析时，发现有关参数不确定，而且这些参数变化的概率也不知道，只知其变化的范围，我们可以采用的分析方法是（）。

A.盈亏平衡分析

B.敏感性分析

C.概率分析

D.功能分析