Topic: researchers should define a topic at the beginning to reflect the research theme, which is clear at a glance.

Description: It can be a letter to the interviewee or a guide explaining the purpose and significance of this survey.

Subject: This is the concretization of the research topic and the core part of the questionnaire. Questions and answers are the main body of the questionnaire.

No: In a large-scale survey that requires statistical analysis, all data are required to be quantified, and a code number or page number is added to the corresponding questionnaire.

I want to investigate the internet to make the investigation easier and more convenient!