A.若原問(wèn)題有最優(yōu)解,則對(duì)偶問(wèn)題也有最優(yōu)解,且最優(yōu)解相同。B.若原問(wèn)題的最優(yōu)解為XB=B-1b,則對(duì)偶問(wèn)題的最優(yōu)解為Y=CBB-1;C.從原問(wèn)題的最優(yōu)單純形表可以讀出對(duì)偶問(wèn)題的最優(yōu)解D.原問(wèn)題和對(duì)偶問(wèn)題之一無(wú)最優(yōu)解,則另一個(gè)也無(wú)最優(yōu)解