进行细磨铁精矿粉烧结时,石灰石的适宜粒度是()mm。
A.0~1
B.0~2
C.0~3
D.3~5
参考答案:C
阅读下列程序,写运行结果。 import java. awt.event.*; import javax. swing.*; public class C3502 implements MouseMotionListener JTextField text=new JTextField(30);C3502() JFrame myWin=new JFrame("Ex3502"); myWin. setDefaultCloseOperation(JFrame. EXIT_ON_CLOSE); myWin. setBounds(100,100,300,100); myWin. getContentPane().add(text,"North"); myWin. addMouseMotionListener(this); myWin. setVisible(true);public void mouseDragged(MouseEvent e) int x=e. getX(),y=e. getY(); text. setText("拖支鼠标,鼠标坐标为:"+x+","+y);public void mouseMoved(MouseEvent e) int x=e.getX(),y=e.getY(); text. setText("移到鼠标,鼠标坐标为:"+x +","+y);public static void main(String[] args) new C3502();
骨折后24小时内摄片时X线征象为()
A.骨折邻近骨密度减低
B.骨折线模糊
C.骨痂
D.平行型骨膜反应
E.骨折线清晰、锐利