( )是指对建筑材料、构件和建筑安装物进行一般鉴定、检查所发生的费用、包括自设试验室进行试验所耗用的材料和化学药品等费用。

A．运输损耗费

B．材料运杂费

C．检验试验费

D．采购及保管费

—Could you tell me _____? I must find him.

—Sorry. I don;t know. But he was here just now. [ ]

A. where Tom was

B. where has Tom gone

C. where Tom is