肝硬化最常见的并发症是______ A．肝性脑病 B．上消化道出血 C．感染 D

下列选项中，不属于标准化法中制订技术统一标准要求的是（）。

A.建设工程

B.装潢工程

C.陈设工程

D.景观工程

E.施工工程

Sam and Jessica are invited to a dance. If there are 7 men and 7women in total at the dance, and one woman and one man are chosen to lead the dance, what is the probability that Sam and Jessica will NOT be chosen to lead the dance

以下程序使用Gridlayout布局管理器使容器中各个构件呈网状布局，请将代码填写完整，使程序能够正确执行。
import java.awt. *;
public class exam_3

public static void main (string args [] )

Frame f= 【12】 ;
f.setLayout (new GridLayout (3, 2 ) );
f.add (new Button ("1"));
f.add (new Button ("2"));
f.add (new Button ("3"));
f.add (new Button ("4"));
f.add (new Button ("5"));
f.add (new Button ("6"));
f.setSize (200,300);
f.setvisible (true);