工程项目的质量不同于一般工业产品的质量,主要表现在()。
A.影响因素多
B.波动性大
C.变异性
D.虚假性
E.终检局限性
参考答案:A, B, C, D, E
产后护理应注意以下几方面()。
A.每日测子宫底高度
B.保持外阴清洁
C.会阴伤口常规用红外线照射
D.保持大小便通畅
E.会阴伤口愈合不佳,可自产后7~10天给高锰酸钾坐浴
本题的功能是求两个交叉图形的并、减、交和异或。窗口中有4个单选按钮和一个图形面板,面板中有两个交叉的图形,选中其中一个单选按钮,图形面板中以黑色填充的方式显示运算结果。 import java. awt. * ; import java. awt. event. * ; import java. awt. geom. * ; import java. util. * ; import javax. swing. * ; public class java3 public static void main(String[] args) JFrame frame=new AreaTestFrame(); frame. setDefaultCloseOperation (JFrame. EXIT_ON_CLOSE); frame. show(); class AreaTestFrame extends JFrame public AreaTestFrame() setTitle("java3"); setSize(WIDTH, HEIGHT); area1 =new Area (new Ellipse2D. Double(100,100,150,100)); area2 = new Area(new Rectangle2D. Double(150,150,150,100)); Container confentPane=getContentpane(); panel=new JPanel() public void paintComponent(Graphics g) super, paintComponent(g); Graphics2D g2=(Graphics2D)g; g2. draw(area1); g2. draw(area2); if(area!=null) g2. fill(area); ; contentPane, add (panel, BorderLayout. CENTER); JPaneI buttonPanel=new JPanel(); ButtonGroup group=new ButtonGroup(); JRadioButton addButton=new JRadioButton("并", false); buttonPanel. add(addButton); group. add(addButton); addButton. addActionListener(new ActionListener() public void actionPerformed(ActionEvent event) area=new Area(); area. add(area1); area. add(area2); panel. repaint(); ); JRadioButton subtractButton =new JRadioButton("减", false); buttonPanel. add(subtraetButton); group. add(subtractButton); subtractButton. addActionListener(new ActionListener() public void actionPerformed(ActionEvent event) area=new Area(); area. add(area1); area. subTract(area2); panel, repaint(); ); JRadioButton intersectButton =new JRadioButton("交", false); buttonPanel. add(interseetButton); group. add(intersectButton); intersectButton. addActionListener(new ActionListener() public void actionPerformed(AetionEvent event) area=new Area(); area. add(area1); area. intersect(area2); panel. repaint(); ); JRadioButton exclusiveOrButton =new JRadioButton("异或", false); buttonPanel. add(exclusiveOrButton); group. add(exclusiveOrButton); exclusiveOrButton, addActionListener (new ActionListener() public void actionPerformed(ActionEvent event) area=new Area(); area. add(area1); area. exclusiveor(area2); panel, repaint(); ); contentPane, add(buttonPanel, BorderLayout. NORTH); private JPanel panel; private Area area; private Area area1; private Area area2; private static final int WIDTH=400; private static final int HEIGHT=400;