“冷却水”物流的代表符号为（） ["A、PW","B、RW","C、TW","D、CW"]
氧化铁皮的熔化温度为1300～1350℃。
以下哪个地址不是私网IP地址：（）. ["10.100.5.100","219.142.72.15","172.17.17.17","192.168.100.100"]
分馏改短循环时主要运行的泵是（）。 ["P-201","P-204","P0402","P-102"]
“工厂水”物流的代表符号为（） ["A、PW","B、WW","C、TW","D、KW"]
外部损失成本
