A central heating and cooling ___________ produces warm or cool air in one central area and distributes it throughout the building.
system
举一反三
- The passage tells us that there is ______. A: a central library in each area B: a library in the center of each area C: one central library for all areas D: more than one central library in each area
- What’s the most popular heating system according to the engineer A: Every room has a heater. B: The Central room has a heater. C: A heat chamber heats air and passes the warm air through ducts and openings into rooms. D: The rooms are installed with blowers or convection.
- With （）， the corrosion problems are much reduced in a central cooling system.
- Gas central heating provides instant warmth and a ____ supply of hot water.
- We’ve just installed central heating. This should make a tremendous difference to the house next winter. We’ve just installed central heating, _______________________________.
内容
- 0
Conversation 115. A. An apartment of two-bedrooms C. An apartment on the ground floorB. An apartment with a good view D. An apartment with central heating A: An apartment of two-bedrooms B: An apartment with a good view C: An apartment on the ground floor D: An apartment with central heating
- 1
词汇与结构 Warm air is less dense than cool air, and _____ air is less dense than dry air.
- 2
It illustrates the central theme implied in the title and throughout the essay: It is _______ to deal with love in a ______ way.
- 3
中国大学MOOC: The central heating system seems to ________. You should call the repairman to check it.
- 4
Cooled air is ______ throughout the building. (U4-B) A: gone B: circulated C: chilled D: frozen