A.Because some unexpected technical problems had occurred. B.Because Spain had blocked a deal on how the system would be run. C.Because the project had run out of money. D.Because the system had been replaced by GPS.
【简答题】(2018· 全国卷 I) 如图,一定质量的理想气体从状态 a 开始,经历过程 1 、 2 、 3 、 4 到达状态 e 。对此气体,下列说法正确的是 ( ) A .过程 1 中气体的压强逐渐减小 B .过程 2 中气体对外界做正功 C .过程 4 中气体从外界吸收了热量 D .状态 c 、 d 的内能相等 E .状态 d 的压强比状态 b 的压强小