Try to avoid using a lots of hidden lines to represent features when describing a part.(True or false: 10 points)
                    举一反三
- Try to avoid using a lots of hidden lines to represent features when describing a part.(True or false: 10 points) A: 正确 B: 错误
 - The leader lines of part number in assembly drawing are allowed to cross from each other.(True or false: 10 points)
 - The leader lines of part number in assembly drawing are allowed to cross from each other.(True or false: 10 points) A: 正确 B: 错误
 - The leader line of part number in assembly drawing can be long-thin breakline and allowed to be broken twice.(True or false: 10 points)
 - The leader line of part number in assembly drawing can be long-thin breakline and allowed to be broken twice.(True or false: 10 points) A: 正确 B: 错误
 
