下列国家与物产组合正确的一组是[ ]
A.泰国------咖啡
B.越南-------天然橡胶
C.马来西亚------油棕
D.缅甸------石油
答案:C
Since then the number of people who were addicted to smoking ________ 20%.[ ]
A.has reduced to
B.reduces by
C.has reduced by
D.have reduced by
从零件图纸到制成控制介质的过程称为()。
A、循环程序
B、零件源程序
C、数控加工的程序编制
D、程序补偿