______是以商品形式存在的资本，它是产业资本在循环过程中采取的一种职能形式。
参考答案：商品资本
The services that a freight forwarder renders may often range from routine and basic tasks such as ( ) or customs clearance to a comprehensive package of services．
A．the providing of services
B．the utilizing of services
C．the booking of space
D．the loading and unloading
编制公路基本建设项目概预算时，钻孔灌注桩施工护筒埋设应采用（）的费率计算。
A.构造物I
B.构造物II
C.技术复杂大桥
D.钢材及钢结构
