问题 单项选择题

关于婴儿囟门的说法正确的是()。

A.出生时后囟门很小或已闭合,最迟约6-8周龄闭合

B.脑发育不良时头围小,前囟门较大或者关闭迟

C.囟门是顶骨、枕骨形成的间隙

D.囟门是顶骨、额骨形成的间隙

答案

参考答案:A

问答题

第七题    生活垃圾填埋场

    某平原城市拟新建一座生活垃圾卫生填埋场,设计库容83×104m3。填埋体呈棱台形,填埋区占地10hm2,挖深2m,堆体高度13m。按日填埋生活垃圾300t计算,填埋场服务年限为10年。

    主体工程建设内容包括:填埋区截流和雨污分流系统、防渗系统、地下水导排系统、渗滤液导排系统、渗滤液处理系统、填埋气导排系统等。工程建设周期13个月。

    工程设计的渗滤液处理方案为:垃圾渗滤液经滤液处理系统处理达到《污水综合排放标准》(GB 8978—1996)三级标准后,用罐车送城市二级污水处理厂处理达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级标准的A标准后排放。

    工程设计的填埋气导排方案为:垃圾填埋气由导气管收集,经高出垃圾填埋面1m的50座导气石笼排放。垃圾填埋气成分主要为CH4、CO2、O2、N2、H2、NH3、H2S,预计封场后第一年产气量最大。

    拟选场址位于城市西南侧5km处,场址及周边的土地类型主要为一般农田;场址所在区域主导风向为西北风,多年平均风速为2.2m/s;场区地下水主要为第四系孔隙潜水,水位埋深为1.6m,地下水由南向北排泄,下伏白垩系岩层为隔水层。填埋区天然基础层厚度为6m,饱和渗透系数为1.45×10-6cm/s。

    工程配套新建5km垃圾运输道路。运输道路两侧200m范围内分布有3个村庄。工程服务期总覆土量为13×104m3,由新建取土场提供,取土场占地为灌木林地。

        [问题]

指出填埋区渗滤液可能污染地下水的几种情形。

单项选择题

Democrats on the Senate Judiciary Committee vented their fury over high gasoline prices at executives of the nation’s five largest oil companies on Wednesday, grilling the oilmen over their multimillion-dollar pay packages and warning them that Congress was intent on taking action that could include a new tax on so-called windfall profits. Such showdowns between lawmakers and oil titans have become a familiar routine on Capitol Hill. But with gas prices nearing $ 4 a gallon, and lawmakers headed home for a weeklong Memorial Day recess where they expect to get an earful from angry constituents, there is added urgency for Congress to appear active.

But while momentum is building for several measures, including a bill that would allow the Organization of the Petroleum Exporting Countries to be sued in American courts under antitrust laws, there is little sign that any of the proposals would do much, if anything, to lower prices quickly. And the oil executives warned that government intervention might only make things worse. Instead, they called on Congress to allow more drilling and exploration for domestic oil.

The increasing urgency to seem aggressive about gasoline prices was apparent on Tuesday when the House voted by an overwhelming 324 to 84 to approve the bill, commonly referred to as NOPEC, which classifies OPEC as a monopoly in violation of the Sherman Antitrust Act. Senate Democrats have included that measure as part of a package of legislation intended to address the high price of gasoline, along with the tax on windfall profits and a measure to tamp down speculation in the oil futures market that many lawmakers think is contributing to the run-up in prices.

At the Judiciary Committee hearing, Democratic senators struggled to have the executives explain how oil prices had risen so high. The senators expressed doubt that basic laws of supply and demand were at work and suggested instead a more sinister combination of monopolistic behavior by oil-producing countries, speculation in the futures markets and sheer corporate greed.

On Monday, President Bush signed a bill temporarily suspending the purchase of crude oil for the nation’s Strategic Petroleum Reserve. Mr. Bush had initially opposed such action but relented after the House and Senate approved the bill by wide margins. Senator Richard J. Durbin, Democrat of Illinois and a p supporter of Senator Baraek Obama’s presidential bid, made a particularly pointed attack, in which he seemed to warn the oil executives that they would soon no longer have such a good friend in the White House. He also suggested that Mr. Bush should be doing more to press the oil companies to help lower prices at the pump, while acknowledging that it would be difficult to pass a windfall profits tax while Mr. Bush was still in office.

From the text we can learn that the bill allowing OPEC to be sued under antitrust laws()

A. handicaps more drilling and exploration for domestic oil

B.is a kind of government intervention that only makes things worse

C. turns out to be less influential to decrease oil price rapidly

D.is in violation of the Sherman Antitrust Act