生产单位提前进厂进行设备调试人员的工资应从（）中列支。

A.建筑安装工程费

B.设备购置费

C.联合试运转费

D.生产准备费

In the past, ice        food, but now we have refrigerators. [ ]

A. used to keep  

B. used to be used for keeping  

C. was used to keeping  

D. used to be used to keeping