产生温室效应的主要气体是

A、CO[img=~/QImg/2013-10-14-11-46-19/image002.jpg]
B、NO[img=~/QImg/2013-10-14-11-46-19/image001.jpg]
C、SO[img=~/QImg/2013-10-14-11-46-19/image002.jpg]
D、H[img=~/QImg/2013-10-14-11-46-19/image002.jpg]S
E、CO