A topic is a broad area of knowledge (e.g., climate change), while a subject is a specific interest within that area.（ ）
举一反三
- In what aspects are the hierarchy of location selection of for-profit service enterprises reflected? A: Selecting a city among different cities. B: Selecting a specific area within a city. C: Selecting a specific place within an area. D: Under different scales, the influencing factors of location selection are different.
- Area A2 is an area. excluding sea area Al. within the coverage of at least one( ) . A: VHF coast station B: MF coast station C: satellite D: RCC
- According to Nanjing’s 1929 “Capital Plan”,the urban area was divided into six areas: central administrative area,municipal administrative area,industrial area,commercial area,cultural and educational area,and residential area.
- （）is the largest free trade area in the area.
- Clustered outbreak of COVID-19 refers to ( ) A: Two or more confirmed cases or asymptomatic infections within 7 days in a small area B: Two or more confirmed cases within 14 days in a small area C: Two or more confirmed cases or asymptomatic infections within 14 days in a small area D: Two or more confirmed cases within 21 days in a small area E: Two or more confirmed cases or asymptomatic infections within 21 days in a small area