单项选择题
A.fragile or expensive cargoes B.raw materials C.finished metallic products D.manufactured goods of large size
Boilers and cylinders are（）.A.raw metallic productsB.fi...
单项选择题Boilers and cylinders are（）.
A.raw metallic products B.finished metallic products C.consumable products D.Manufactured goods of large Size
Tools and instruments belong to（）.A.raw materialsB.cons...
单项选择题Tools and instruments belong to（）.
A.raw materials B.consumable products C.finished metalic products D.raw metallic products
When loading or unloading baled cargo on board,the stra...
单项选择题When loading or unloading baled cargo on board,the straps（）to lift or drag the bales.
A.are forbidden B.are allowed C.can be used D.are usually used
