static void Main(string[] args)
{
DauBepMonQuay dauBep1 = new DauBepMonQuay();
DauBepMonKho dauBep2 = new DauBepMonKho();
DatMonAn khachGoiMon = new ThitHeoKhoTo();
NguoiPhucVu nhanVienPhucVu = new NguoiPhucVu(khachGoiMon);
Console.ReadKey();
}
public ThitHeoKhoTo()
{
dauBep = new DauBepMonKho();
}