蛋白质所形成的胶体颗粒,在下列哪种条件下不稳定()
A.溶液pH小于pI
B.溶液pH大于pI
C.溶液pH等于pI
D.溶液pH等于7.4
E.在水溶液中
参考答案:C
人体内食物的化学性消化开始于[ ]
A.胃
B.小肠
C.口腔
D.食道
下面程序中,在主窗口单击鼠标后,就会生成一个新窗口。 import java. awt. * ; import java. awt. event. * ; public class java3 extends Frame java3() super("java3"); addNotify(); addWindowListener(new WindowAdapter() public void windowClosing(WindowEvent e) System. exit(0); ); Insets insets=getlnsets(); setSize(insets, left+insets. right+150, insets, top+insets. bottom+150); this. addMouseListener(MouseEvent Handler()); class MouseEventHandler implements MouseAdapter public void mousePresse(MouseEvent evt) Rectangle bounds=getBounds(); int x=evt. getX()+bounds. x; int y=evt. getY()+bounds, y; java3 m=new java3(); m. setLocation(x, y); m. show(); static public void main(String[] args) (new java3()), show();