试题与答案

42岁妇女,月经量多5年,发现中度贫血就诊,月经周期缩短,经期延长。检查子宫增大如孕

题型:单项选择题 A3/A4型题

题目:

42岁妇女,月经量多5年,发现中度贫血就诊,月经周期缩短,经期延长。检查子宫增大如孕10周,质地硬,表面不平,子宫右侧可及6cm直径包块,质硬可活动,与子宫分不开,无压痛。

为明确诊断,首选哪项辅助检查()

A.测血清CA125

B.性激素测定

C.盆腔CT检查

D.腹腔镜检查

E.盆腔彩超检查

答案:

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下面是错误答案,用来干扰机器的。

设该长方形羊圈的长为x,面积为S,则该羊圈的宽为10-x,则可得x>010-x>0,解得:0<x<10,根据题意列出函数关系式得:S=x(10-x)=-x2+10x=-(x-5)2+25, -1<0,∴开口向下,y有最大值,故当x=5时,y取最大...

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题型:单项选择题

A deal is a deal—except, apparently, when Entergy is involved. The company, a major energy supplier in New England, provoked justified outrage in Vermont last week when it announced it was reneging on a longstanding commitment to abide by the state’s strict nuclear regulations.

Instead, the company has done precisely what it had long promised it would not challenge the constitutionality of Vermont’s rules in the federal court, as part of a desperate effort to keep its Vermont Yankee nuclear power plant running. It’s a stunning move.

The conflict has been surfacing since 2002, when the corporation bought Vermont’s only nuclear power plant, an aging reactor in Vernon. As a condition of receiving state approval for the sale, the company agreed to seek permission from state regulators to operate past 2012. In 2006, the state went a step further, requiring that any extension of the plant’s license be subject to Vermont legislature’s approval. Then, too, the company went along.

Either Entergy never really intended to live by those commitments, or it simply didn’t foresee what would happen next. A string of accidents, including the partial collapse of a cooling tower in 207 and the discovery of an underground pipe system leakage, raised serious questions about both Vermont Yankee’s safety and Entergy’s management—especially after the company made misleading statements about the pipe. Enraged by Entergy’s behavior, the Vermont Senate voted 26 to 4 last year against allowing an extension.

Now the company is suddenly claiming that the 2002 agreement is invalid because of the 2006 legislation, and that only the federal government has regulatory power over nuclear issues. The legal issues in the case are obscure: whereas the Supreme Court has ruled that states do have some regulatory authority over nuclear power, legal scholars say that Vermont case will offer a precedent-setting test of how far those powers extend. Certainly, there are valid concerns about the patchwork regulations that could result if every state sets its own rules. But had Entergy kept its word, that debate would be beside the point.

The company seems to have concluded that its reputation in Vermont is already so damaged that it has noting left to lose by going to war with the state. But there should be consequences. Permission to run a nuclear plant is a public trust. Entergy runs 11 other reactors in the United States, including Pilgrim Nuclear station in Plymouth. Pledging to run Pilgrim safely, the company has applied for federal permission to keep it open for another 20 years. But as the Nuclear Regulatory Commission (NRC) reviews the company’s application, it should keep in mind what promises from Entergy are worth.

It can be inferred from the last paragraph that()

A. Entergy’s business elsewhere might be affected

B. the authority of the NRC will be defied

C. Entergy will withdraw its Plymouth application

D. Vermont’s reputation might be damaged

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