以政府调研员的身份，用不超过400字的篇幅，归纳出在维护教育公益性的过程中，必须处理

码头

肿势高突，盘根收束，为

A．气肿
B．实肿
C．血肿
D．湿肿
E．痰肿

本题的功能是监听对于颜色的复制和粘贴。程序窗口中，有一个颜色设置框和两个按钮，名为“复制”和“粘贴”，在颜色设置框中设置颜色后，下面的预览面板将显示选中的颜色，单击“复制”按钮后，将设置的颜色复制到系统的剪贴板上，然后继续选择其他颜色，当单击按钮“粘贴”后预览面板的颜色将设置为刚才复制的颜色。
import java. io. * ;
import java. awt. * ;
import java. awt. datatransfer. * ;
import java. awt. event. * ;
import java. awt. image. * ;
import javax. swing. * ;
public class java3

public static void main(String[] args)

JFrame frame=new SerialTransferFrame();
frame. setDefaultCloseOperation(JFrame. EXIT_ON_CLOSE);
frame. show();


class SerialTransferFrame extends JFrame

public SerialTransferFrame()

setTitle("java3");
Container contentPane=getContentPane();
chooser=new JColorChooser();
contentPane. add (chooser, BorderLayout. CENTER);
JPanel panel=new JPanel();
JButton copyButton=new JButton("复制")
panel. add(copyButton);
copyButton. addActionListener (new ActionListener()

public void actionPerformed(ActionEvent event)

copy();

);
JButton pasteButton=new JButton("粘贴");
panel. add(pasteButton);
pasteButton. addActionListener(new
ActionListener()

public void actionPerformed(ActionEvent event)

paste();

);
contentPane, add(panel, BorderLayout. SOUTH);
pack();

private void copy()

Clipboard clipboard
=Toolkit. getDefaultToolkit(). getSystemClipboard();
int color=chooser, getColor();
SerialSelection selection=new SerialSeleetion(color);
clipboard. setContents(selection, null);

private void paste()

Clipboard clipboard
=Toolkit. getDefaultToolkit(). getSystemClipboard();
Transferable contents=clipboard, getContents(null);
if(contents==null) return;
try
(
DataFlavor flavor=new DataFlavor(
"application/x-java-serialized-object; class=java. awt. Color");
if(contents. isDataFlavorSupported(flavor))

Color color
=(Color) contents. getTransferData(flavor);
______;


catch (ClassNotFoundException exception)

JOptionPane. showMessageDialog(this, exception);

catch (UnsupportedFlavorException exception)

JOptionPane. showMessageDialog(this, exception);

catch(IOException exception)

JOptionPane. showMessageDialog(this, exception);


private JColorChooser chooser;

class SerialSelection implements Transferable

SerialSeleetion(Serializable o)

obj=o;

public DataFlavor[] getTransferDataFlavors()

DataFlavor[] flavors=new DataFlavor[2];
Class type=obj. getClass();
String mimeType
= "application/x-java-serialized-object; class="
+type. getName();
try

flavors[0]=new DataFlavor(mimeType);
flavors[1]=DataFlavor. stringFlavor;
return flavors;

catch (ClassNotFoundException exception)

return new DataFlavor[0];


public boolean isDataFlavorSupported (DataFlavorflavor)

return
DataFlavor. stringFlavor. equals(flavor) ||"application", equals(flavor, getPrimaryType())
&&"x-java-serialized-object", equals(flavor. getSubType())
&& flavor. getRepresentationClass(). isAssignableFrom(obj. getClass());

public void getTransferData(DataFlavor flavor)
throws UnsupportedFlavorException
if(!isDataFlavorSupported(flavor))
throw new UnsupportedFlavorException(flavor);
if (DataFlavor. stringFlavor. equals(flavor))
return obj. toString();
return obj;

private Serializable obj;

一个学生估算一块木头下面鼠妇的种群数量。她捉了40只鼠妇，将它们标记后放回，并与该种群中的其他个体混合在一起。24h后，她又捉了40只鼠妇，在新捉的鼠妇中，只有16只是有标记的。假定在24h内，鼠妇无死亡，没有受伤害，无迁入与迁出，则鼠妇的种群数量约为（）

A.60只

B.100只

C.80只

D.无法确定

参观游览出发前，地陪应提醒旅游者带好住房卡和详细记住下榻饭店的地址和通信方式等，以备一旦出现意外走失能够安全返回饭店。