会计核算软件应该提供在账务处理模块中自动生成的机内记账凭证进行修改的功能。( )
参考答案：错
The art center is ______ used to be Factory 789 and _______ millions of tractors were made.
A．what; where
B．where; where
C．that; which
D．where; which
若经过适当的热处理、使其表面形成一层致密度较高且孔径很小的薄层、这时大于滤布表面小孔的颗粒将不能被截留
