Which of these functions cannot be attributed to the mucous membrane that lines the nasal cavity?
A: warms incoming air
B: filters particles from incoming air
C: moistens incoming air
D: initial gas exchange between air and blood occurs here
A: warms incoming air
B: filters particles from incoming air
C: moistens incoming air
D: initial gas exchange between air and blood occurs here
举一反三
- All three systems have the ports （） to swirl the incoming air and direct it in the appropriate path.
- Air preheater is a heat exchange device which uses the heat of flue gas to heat the air needed for combustion. () A: Right B: Wrong
- Which of following functions is not one of the functions of air conditioner?（）
- The small air sacs in the lungs through which gases are exchanged between the atmosphere and the blood are the __.
- 4. From the control tower, air traffic controllers coordinate aircraft movement both ________ and on the ground. A: on the air B: in the air C: at the air D: of the air