问题 多项选择题

下列关于水泥粉煤灰碎石桩的说法中,表述正确的是()。

A.轻型井点系统主要由井点管、连接管、集水总管和抽水设备等组成

B.轻型井点布臵一般有单排、双排和环形布臵等方式

C.井点管得距离一般选用0.8m、1.2m和1.6m三种,井点管距离基坑边缘应大于3.0m,以防漏气,影响降水效果

D.管井可根据地层条件选用冲击钻、螺旋钻、回转钻成孔,封孔用黏土回填,其厚度不少于5m

E.管井降水可采用潜水泵、离心泵、深井泵

答案

参考答案:A, B, E

解析:轻型井点系统主要由井点管、连接管、集水总管和抽水设备等组成。轻型井点布臵应根据基坑平面的大小与深度、土质、地下水位高低与流向、降水深度等要求确定,一般有单排、双排和环形布臵等方式。井点管得距离一般选用0.8m、1.2m和1.6m三种,井点管距离基坑边缘应大于1.0m,以防漏气,影响降水效果。管井可根据地层条件选用冲击钻、螺旋钻、回转钻成孔。封孔用黏土回填,其厚度不少于2m。管井降水可采用潜水泵、离心泵、深井泵。

单项选择题

President Bush takes to the bully pulpit to deliver a stern lecture to America’s business elite. The Justice Dept. stuns the accounting profession by filing a criminal indictment of Arthur Andersen LLP for destroying documents related to its audits of Enron Corp. On Capitol Hill, some congressional panels push on with biased hearings on Enron’s collapse and, now, another busted New Economy star, telecom’s Global Crossing. Lawmakers sign on to new bills aimed at tightening oversight of everything from pensions and accounting to executive pay.

To any spectators, it would be easy to conclude that the winds of change are sweeping Corporate America, led by George W. Bush, who ran as "a reformer with result." But far from deconstructing the corporate world brick by brick into something cleaner, sparer, and per, Bush aides and many legislators are preparing modest legislative and administrative reforms. Instead of an overhaul, Bush’s team is counting on its enforcers, Justice and a newly empowered Securities & Exchange Commission, to make examples of the most egregious offenders. The idea is that business will quickly get the message and clean up its own act.

Why won’t the outraged rhetoric result in more changes For starters, the Bush Administration warns that any rush to legislate corporate behavior could produce a raft of flawed bills that raise costs without halting abuses. Business has striven to drive the point home with an intense lobbying blitz that has convinced many lawmakers that over-regulation could startle the stock market and perhaps endanger the nascent economic recovery.

All this sets the stage for Washington to get busy with predictably modest results. A surge of caution is sweeping would-be reformers on the Hill. "They know they don’t want to make a big mistake," says Jerry J. Jasinowski, president of the National Association of Manufacturers. That go-slow approach suits the White House. Aides say the President, while personally disgusted by Enron’s sellout of its pensioners, is reluctant to embrace new sanctions that frustrate even law-abiding corporations and create a litigation bonanza for trial lawyers. Instead, the White House will push for narrowly targeted action, most of it carried out by the SEC, the Treasury Dept. , and the Labor Dept. The right outcome, Treasury Secretary Paul H. O’Neill said on Mar. 15, "depends on the Congress not legislating things that are over the top."

To O’Neill and Bush, that means enforcing current laws before passing too many new ones. Nowhere is that stance clearer than in the Andersen indictment. So the Bush Administration left the decision to Justice Dept. prosecutors rather than White House political operatives or their reformist fellows at the SEC.

It seems that the President, in face of the present situation,()

A. must embrace new sanctions

B. should avoid law enforcement

C. may be caught in a dilemma

D. can stop delivering lectures

单项选择题 A1/A2型题