19. _____without prior notice, and we reserve the right to change product specifications, supporting do cumentation and packaging at any time.
(A)Costs are possible to increase
(B)Offers likely to be withd rawn
(C)Terms may adjust
(D)Prices are subject to change。

答案：登入後查看
統計： A(1), B(1), C(1), D(9), E(0) #2664904