首页 / 百科 / 内容详情 Since the Third Plenary Session in 1978, the railway electrification process had accelerated slowly. 2022-04-25 4次阅读 electrification accelerated The Since the Third Plenary Session in 1978, the railway electrification process had accelerated slowly. A.正确B.错误正确答案：错误 The whole construction project of Chengyu Railway was under the extremely difficult condition of lacking mechanical equipments. Before 1949, there were about 23,500 kilometers railway constructed and were all in service. 猜你喜欢