*Question*
This is a correct answer to the following question about Han Dynasty. Yes or no? Answer: Spanning over four centuries, the period of the Han Dynasty is considered a golden age in Chinese history. Question: how many social classes existed in the han dynasty
**Answer**
No

*Question*
This is a correct answer to the following question about Invoice. Yes or no? Answer: The document indicates the buyer and seller, but the term invoice indicates money is owed or owing. Question: what is the use of a sales invoice?
**Answer**
No

*Question*
This is a correct answer to the following question about Motorcycle speedway. Yes or no? Answer: Speedway is popular in central and northern Europe and to a lesser extent in Australia and North America. Question: What is motorcycle speedway racing
**Answer**
No

*Question*
This is a correct answer to the following question about Lapping. Yes or no? Answer: The lap is then used to cut a harder materialthe workpiece. Question: what is a lapping machine
**Answer**
No