000 2000 00 1-67 00 000 2000 00 0 0 000 000 00 0010 00 000 2000 001 U 00 002-00 0 2021/2/202021/2/20 11 1 2 1 1 1 1 2 1 1 1 0 0 1 1 1 0 0 1 1 1 0 0 0 6 0 0 0 0 1 0 0 0 0 7 0 0 0 0 0 0 1 2 1 0 1 1 2 0 0 2 0 0 1 0 1 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 U         - - - - →             - - → → =    