The basic principle behind the total structure ventilation design is to use inside air to sweep up through a building to clear and remove the dust-laden air.
A: 正确
B: 错误
A: 正确
B: 错误
举一反三
- The basic principle behind the total structure ventilation design is to use inside air to sweep up through a building to clear and remove the dust-laden air. A: 正确 B: 错误
- Michael’s vacuum cleaner squealed loudly, shook violently, and _____. A: filled the air with dust B: dust filled the air C: dust was filled in the air D: dust was filled with the air
- The disadvantage of district ventilation is that there are many return air shafts and ventilation equipment. A: 正确 B: 错误
- The air inside a house or office building often has higher concentrations of contaminants ____ heavily polluted outside air. A: than does B: more C: as some that are D: like of
- The air inside .a house on office building often has more contaminants（）the heavily polluted air outside. A: than does B: as C: as some that are D: than that of