送交者: steven 于 2006-2-14, 00:43:31:
回答: 说到F22,以前看过PBS的一个节目说的就是它的研制竞标的 由 蓝隼 于 2006-2-14, 00:36:53:
The typical way for this kind of biding is to have two companies both make two prototypes, and the government rep will test them and see which one is the winner. F-22 is build by Lockheed Martin and Boeing.