China Naming Network - Eight-character fortune telling - The weather quality in Nanjing
The weather quality in Nanjing
First, harmful gases and dust. Harmful gases mainly include carbon monoxide, sulfur dioxide, nitrogen dioxide and other gases; Dust mainly refers to some small solid particles; Therefore, the option is correct;
B, oxygen is the main component of air and will not cause pollution; So the option is wrong;
C, nitrogen and oxygen are the main components of air, and will not cause pollution; So the option is wrong;
D nitrogen is the main component of air and will not cause pollution; So the option is wrong;
So choose one