货物性质定义（Cargo Nature Definitions）

GC = General Cargo 普通货物

RF = Refrigerated Cargo 冷藏货物

AW = Awkward Cargo  (Out of Gauge Cargo) 大件货

AD = Awkward Dangerous Cargo (Out of Gauge Dangerous Cargo) 大件危险货物

RD = Refrigerated Dangerous Cargo 冷藏危险货物