2013165438+1October 4th, the haze weather appeared again in Harbin. The air quality comprehensive pollution index AQI exceeds 340, and PM2.5 reaches 300. PM2.5

(1) The increase of automobiles leads to the emission of a lot of smoke and dust from automobile exhaust into the air (reasonable).

(2) Banning small boilers by administrative means, implementing central heating and reducing coal burning.

Analysis of test questions: the causes of smog are related to the increase of coal burning for heating in winter and the burning of straw around the city, and also related to the emission of a large amount of smoke and dust into the air caused by the increase of automobiles; In order to slow down the smog, those who burn their own boilers instead of using heating companies should ban small boilers by administrative means, implement central heating and reduce coal burning.