增压柴油机出现早期磨损，可能原因是：（）A、增压前的进气接管裂  B、增压后的进气接

情景对话。

M:Excuse me.Can you give me some information about active holidays?

W:__1__Would you please tell me exactly what you mean?

M:OK.When I go on holidays,I'd like to take exercise.__2__What I mean is that I'm the sort of

man who enjoys swimming,skiing and choose sorts of things.

W:__3__Um...active holidays,let me see.What about diving,sir?We can offer you two weeks off

the coast:one week diving and one week fishing with the local fishermen.But you only need to pay

$800 for it.__4__

M:Fishing?Is there any chance of getting in a bit of sailing?

W:__5__They are mostly organized by the sailing school.But rowing,yes.Are you interested in

rowing,sir?

M:Well,I did a lot of rowing when I was at university.

A．I hate sitting around and doing nothing.

B．No problem.

C．Active holidays,sir?

D．It's a very good bargain.

E．It's a bit difficult.

F．I'm sorry we don't do many sailing holidays,sir.

G．Oh,sir,sounds very interesting.

下面是一个Applet程序，其功能是实现对JButton类的扩展，封装成上网助力一样的按钮类，每个按钮对象对应一个 URL地址，点击则访问相应的URL。要求在窗口中从上到下排 * * 个这样的按钮。请改正程序中的错误(有下划线的语句)，使程序能输出正确的结果。
注意：不改动程序的结构，不得增行或删行。
程序运行结果如下：

import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class ex28_3 extends JApplet implements ActionListener
ButtonURL[] btnURL = new ButtonURL[3];
public void init()
btnURL[0] = new ButtonURL("新浪网","http://www.sina.com.cn/");
btnURL[1] = new ButtonURL("163","http://www.163.com/");
btnURL[2] = new ButtonURL("搜狐","http://www.sohu.com/");
GridLayout gl = new GridLayout(1,3);
getContentPane().setLayout(gl);
for (int i = 0; i ＜ btnURL.length; i++)
btnURL[i].addActionListener(this);
getContentPane().add(btnURL[i]);


public void actionPerformed(ActionEvent ae)
ButtonURL btnClick =ae.getSource();//获取发生事件的对象
try
URL load = new URL(btnClick.strAddr);
getAppletContext().showDocument(strAddr);
catch (MalformedURLException e)
showStatus("Bad URL:" + btnClick.strAddr);



class ButtonURL extends JButton
String strAddr;
ButtonURL(String strLabel, String strAddress)
super(strLabel);
strAddr = strAddress;


ex28_3.html
＜HTML＞
＜HEAD＞
＜TITLE＞ex28_3＜/TITLE＞
＜/HEAD＞
＜BODY＞
＜applet code="ex28_3.class" width=800 height=400 ＞
＜/applet＞
＜/BODY＞
＜/HTML＞

结核性胸膜炎治疗过程中应用乙胺丁醇，最易出现的不良反应是（）

A.皮疹

B.药物热

C.胃肠道刺激

D.肾功能损害

E.球后视神经炎

从2002年起，我国周全实施贷款五级分类轨制，该轨制按照贷款的风险水平，将银行信贷资产分为( )。

A．正常关注次级可疑损失
B．正常次级关注可疑损失
C．正常关注可疑次级损失
D．正常次级可疑关注损失

调度自动化主站中央处理器平均负荷率在电力系统正常情况下任意30min内应小于( )。

A．20%；
B．35%；
C．45%；
D．30%。