RT-I :图 F1/0 F1/1 F0/0 F0/0 RS-1 RS-2 F0/1 F02 F0/1 F02 F00 F00 F00 Sw-1 SW-2 Sw-3 Sw-4 F0/1 F0/3 F0/1 F03 F01F03 FO 0/1F03 F02 F0/2 F02 F0/2 Host 1 Host 2 Host.3 Host 4 Host.5 Host.6 Host. 7 Host. 8 Host 9 Host 1o Host. 1 Host. 122