Which of the following option is not the main cause of London smog event? ( )
A、Gale and dust;
B、Automobile exhaust emission;
C、Industrial coal combustion;
D、Coal for heating
发布时间:2025-07-23 01:50:28
A、Gale and dust;
B、Automobile exhaust emission;
C、Industrial coal combustion;
D、Coal for heating