After careful choice, she decided to_____in American literature.
A.specialize
B.work
C.study
D.special
A.specialize
B.work
C.study
D.special
收到,接受,选择()
a.receive;accept;choice
b.receive;choice accept;
c.accept;receive;choice
d.accept;choice receive;
●Quality management(74).
(74) A. is another name for careful inspections
B. is inversely related to productivity
C. is primarily the responsibility of management
D. is primarily the responsibility of the workers
What type(s) of control-Newfoundland, occurrence, or feedback-do you think would have been most useful in this sinusoidal? Explain your choice(s).
import java.awt.*;
import java.awt.event.*;
public class java2 extends java.applet.Applet imple-
ments hemListener,ActionListener
{Choice choice;
TextField text;
TextArea area;
Button add,del;
public void init() .
{choice:new Choice();
text=new TextField(8);
area:new TextArea(6,15);
choice.add("音乐天地");
choice.add("武术天地");
choice.add("象棋乐园");
choice.add("交友聊天");
add=new Button("添加");
del=new Button("删除");
add.addActionListener(this);
del.addActionListener(this);
choice.addItemListener(this);
add(choice);
add(del);add(text);add(add);add(area);
}
public void itemStateChanged(hemEvent e)
{String name= ;
int index=choice.getSelectedIndex();
area.setText("\n"+index+":"+name);
}
public void actionPerformed(ActionEvent e)
{if(e.getSource()= =add||e.getSource()= =
text)
{String name=text.getText();
if(name.length()>0)
{choice.add(name);
choice.select(name);
area.append("\n添加"+name);
}
}
else if(e.getSource()= =del)
{choice.remove();
area.append("\n删除"+choice.getSelectedItem
());
}
}
}
如下简单的模型是来度量选校方案对标准化测验成绩的影响的[有兴趣的话,参见Rouse(1998):。其中,score是一次全州范围内的测验成绩;choice是一个二值变量,表示一个学生去年是否去所选择的学校上学;faminc是家庭收入。choice的Ⅳ是grant,即资助学生用于选校学费的美元数量。资助金额因家庭收入水平的不同而不同,因此我们在方程中要控制faminc。
(i)尽管方程中有faminc,为什么choice还可能与u1相关?
(ii)如果在每个收入等级中,资助金额是随机分配的,那么grant是否与u1不相关?
(iii)写出choice的约简型方程。我们需要什么而使grant与choice偏相关?
(iv)写出score的约简型方程。解释它为什么有用?(提示:你如何解释grant的系数?)
如何访问以下菜单?
Please choose an option from below:
1.Run primary image(version 4.1.192.17)(active)
2.Run backup image(version 4.2.99.0)
3.Manually update images
4.Change active boot image
5.Clear Configuration
Please enter your choice:
A、在启动(bootup)期间,该菜单自动显示。
B、从CLI输入一个中断序列。
C、使用控制器菜单命令。
D、在启动(bootup)时按Esc键。
Goods will be shipped ()30 days after receipt of the L/C.
A. to
B. for
C. on
D. with in
D/P at 60 days after sight 比D/A at 30 days after sight的风险大。
A.正确
B.错误