### 1石油项目.mp3 **Size** 4952398 B **MD5** db1978063bf73e7a208f00d8f59ae04c **SHA1** 48469e99c37f1ccaf1f58bdc4e947d832128572a ### 2电站项目.mp3 **Size** 6169913 B **MD5** 5db6780d78909ea610e360ade405e2ce **SHA1** 165c40a21f56057e84dbd8e79c5e50cacbd2a9f3 ### 3留学项目.mp3 **Size** 6804793 B **MD5** 40f79e5edf90f1602df2be9f55dacdeb **SHA1** 8164e04b3fd8a4e801ca7518bce8624bab74e960 ### 4旅游项目.mp3 **Size** 6429048 B **MD5** d16c6a6b93398cbabdb601707ac681b1 **SHA1** e4c3b59f9995983e4c810e27fd374dc3f502acce