三條有關燃料既問題！急 [10分]

1) Town gas is more convenient as it is safer to use and easier to store and transport.

A gas burner is designed to burn a small quantity of town gas at a time which permits town gas to burn safely. However, LPG is stored in bottles and on exposure to heat, explosions may occur easily.

For town gas, there is no need for consumers to store or transport the gas since the gas company supplies it through pipes. However, as mentioned above, LPG is stored in bottles and safety precautions have to be strictly followed for its storage.

2) The man was fainted due to a leakage of carbon monoxide from the gas heater.

( Carbon monoxide can cause faintness even at very low concentration ).

3) Burning of diesel fuel produces a lot of air pollutants such as suspended particulates and nitrogen oxides. However, it is not the case for LPG and thus it enhances a good air quality.