送交者: ping_max 于 2006-09-29, 17:51:09:

回答: Assuming filling tank is instantaneous, then 6 planes are needed 由 outsider 于 2006-09-29, 15:15:55:

• That's true (无内容) - outsider (0 bytes) 2006-09-29, 18:09:39 (105204)

加跟贴