下列程序完成了调用静态方法和实例方法 , 补充空白处并写出运行结果 class Program { static void Main(string[] args) { Example e1 = new Example(); e1.meth1(); // 调用meth2() Console.WriteLine("a={0},b={1}",e1 .a ,Example .B 、; Console.ReadLine(); } } class Example { public int a; static public int b; public void meth1() { a = 10; b = 20; } public static void meth2() { b = 30; } 程序的输出结果是________ _ ______________