下列业务属于营改增范围的有()
A、航空运输服务
B、邮政特殊服务
C、研发和技术服务
D、广播影视服务
参考答案:A, B, C, D
The celebration gathering ____ the anniversary of Macao's return to the motherland were held here
on Sunday. [ ]
A. to mark
B. marks
C. marking
D. marked
转盘主轴承的作用是承受反向冲击载荷。