单项选择题
A．01 B．02 C．05 D．01，05
A．热拔合金钢制无缝锅炉管 B．热拔合金钢制无缝锅炉管HOT FINISHED SEAMLESS STEEL PIPES FOR BUILER C．热拔合金钢制无缝锅炉管787×39×5000-7000MM D．热拔合金钢制无缝锅炉管787×39×5000-7000MM HS 73045910
A．85411000 B．8541000 C．INB0084 D．4456789
