Since rail network is not as extensive as highway network in most countries and its limitation to fixed track facilities, as a result, railroads provide （） service.

In general, factors influencing transportation costs ca...

单项选择题In general, factors influencing transportation costs can be grouped into 2 major categories---product-related factors and market-related factors. Please find below, （）is not belong to the market-related factors.

As some countries attempt to shift away from natural ga...

单项选择题As some countries attempt to shift away from natural gas or petroleum energy systems toward coal-based systems, the need for coal slurry(煤泥) will increase in these countries,（）transport mode will be the first choice for transfer this kind of product.

The supply chain activities encompass all associated wi...

单项选择题The supply chain activities encompass all associated with the flow and transaction of goods, the flow of information from the raw materials supplier to the end user, as well as the reverse flow of materials and in formation in the（）