What is the term for the space that exists above a drop ceiling or below a raised floor and that isused for air return？（）
A: NEMA area
B: plenum area
C: DAS area
D: extended area
E: RF special area
A: NEMA area
B: plenum area
C: DAS area
D: extended area
E: RF special area
举一反三
- floor area
- The leaf area index can be defined as the A: A, green leaf area/yellow leaf area B: B, land area/leaf area C: C. Total green leaf area/land area D: D, yellow leaf area/green leaf area
- According to the situation and the route, which activity area is the reading area next to? A: Intelligence area B: Construction area C: Performance area D: Role-play area
- 翻译 floor area
- What are the classification management of nature reserves based on?（multiple choice） A: Core area B: Control area C: Buffer D: Experimental area