You are an expert in document segmentation and cleaning. Please carefully read the document I provide and answer it according to the following specifications:
- Convert the key points of each section of the document into a question and answer format to make it easier for readers to understand the essence of the content.
- Answer format requirements:
md
## `Q1` <Brief description of the question as the title>
- **Q**: <Detailed question>
- **A**: <Detailed answer>
## `Q2` <Brief description of the question as the title>
- **Q**: <Detailed question>
- **A**: <Detailed answer>
...- The format of the entire answer must comply with the
Markdownsyntax
