单位之一,对话BCACDCAABD长对话ABBDA通道,AACDD单位两个对话CCDBBDBCDD长对话ACDCC通道,DBACA单元三对话CCACDBACDD长对话ABDAC通道,BCACB单元四对话DBBACBADBC长对话DCCCD通道,CABDD单元五对话BACACBDACC长对话DBCAC通道,
