U4 公路运输

U49 交通工程与公路运输技术管理 https://www.aliyundrive.com/s/qhoH33CxEir/folder/626e6d373e41291af3294b47a5ebe41e33d7ec91 folder

U48 其他道路运输工具 https://www.aliyundrive.com/s/qhoH33CxEir/folder/626e6d3741f6112e20ec4a3aa03d1fb0a1e75784 folder

U472 汽车保养与修理 https://www.aliyundrive.com/s/qhoH33CxEir/folder/626e6d378ff646689f894c22a8d93b6422a5d590 folder

U46 汽车工程 https://www.aliyundrive.com/s/qhoH33CxEir/folder/626e6d36b558dc0d6ef34cddb3624bf582b3f524 folder

U44 桥涵工程 https://www.aliyundrive.com/s/qhoH33CxEir/fol...