How many types of business meeting according to the video？What are they？
举一反三
- How many types of business letters mentioned in the Teaching video 1?教学视频1中提到了商务信函有几种类型？
- How many types of pollution are there?what are they ?
- How many types of scaling? What are they?
- How many Americans are smokers according to the video clip?
- How many personality types are there according to the personality type theory?