Environmental scientists are concerned that if industrial pollution was to continue without effective measures, the Earth’s surface would warm up to a dangerous degree in the next few centuries.

( )是指为组织采购、供应和保管材料过程中所需要的各项费用，包括采购费、仓储费、工地保管费、仓储损耗。

A．采购及保管费

B．检验试验费

C．材料运杂费

D．运输损耗费