题目内容

某施工单位承担一台大型压缩机和一台配套的燃气轮机的吊装任务，压缩机单重为82t，燃气轮机单重为37.41t，整体到货。在施工现场可提供200t、170t的大型汽车式起重机各一台。200t、170t汽车式起重机吊索具重量均为2t。由于现场条件限制，两台起重机的最佳使用工况如表3-2。两台起重机的最佳使用工况汽车式起重机吊车臂长/m 作业半径/m 额定负荷/t 200t 24.4 9 71 170t 22.7 7 75.5 注：如果用抬吊时，不均衡荷载系数取1.1。项目技术负责人组织编制了吊装方案并经项目经理审核、批准。问题：1.选择现场合适的汽车式起重机完成压缩机的吊装任务，并作荷载核算。

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If the United States had built more homes for poor people in 1955, the housing problems now in some parts of the country () so serious.

A. wouldn’t be
B. wouldn’t have been
C. will not be
D. would have not been

71（）

A. able
B. capable
C. available
D. acceptable

听说有客人要来, she shopped all morning in that supermarket.

[说明] 以下程序实现了利用鼠标任意移动圆形的位置，仔细阅读代码和相关注释，将程序补充完整。 [代码6-1] import java.awt.; import java.awt.event.; public class CIUSAMPLE extends Frame implements MouseMotionListener, MouseListener static CIUSAMPLE frm=new CIUSAMPLE ( ); int x=70,y=60,posX=70,posY=60,dx,dy; public static void main (String args[]) frm.setTitle ("Dragging a circle"); frm.setSize (200,150); (1) ffm.addMouseMotionListener (frm); frm.setVisible (true); public void mousePressed (MouseEvent e) (2) dy=e.getY ( ) -posY; public void mouseDragged (MouseEvent e) (3) y=e.getY ( ) -dy; if(dx＞0&&dx＜50&&dy＞0&&dy＜50) //如果指针落在正方形区域内 Graphicsg=getGraphics ( ); (4) public void paint (Graphics g) g.setColor (Color.pink); //设置绘图颜色为粉红 g.fillOval(x,y,50,50); //以基准点为图形在左上角绘出圆形 (5) posY=y； public void mouseMoved (MouseEvent e) public void mouseReleased (MouseEvent e) public void mouseEntered (MouseEvent e) public void mouseExited (MouseEvent e) public void mouseClicked (MouseEvent e)