The five major modes are water, rail，truck, pipeline, and air. E

The five major modes are water, rail，truck, pipeline, and air. Each mode enjoys what might be called natural product provinces. For example, water transportation is usually used to move goods of low-value, and in large quantity. Low value reduces the transportation urgency, and the large quantity is especially suited for the volume loading and unloading machinery used at dockside.
【正确答案】：五种主要运输方式分别为水路运输、铁路运输、公路运输、管道运输和航空运输，每种运输方式都有各自的活动范围，可称之为产品自然领域，如通常利用水路运输运送价值低、货量大的商品。价值低减少了运输的急迫性，而货量大特别适用码头使用的大型装卸机械。
【题目解析】：参见教材P189。