public CTCB(int _maCB, SanBay _sbtg, int _tgDung, string _ghiChu)
{
maCB = _maCB;
SBTG = _sbtg;
tgDung = _tgDung;
ghiChu = _ghiChu;
}
public TuyenBay(int _maTB, SanBay _sbDi, SanBay _sbDen)
{
maTB = _maTB;
SBDi = _sbDi;
SBDen = _sbDen;
}