血液中使呼吸运动加强的主要因素是

A、CO[img=~\/QImg\/2013-06-27-14-49-35\/image003.gif]分压增高
B、CO[img=~\/QImg\/2013-06-27-14-49-35\/image003.gif]分压降低
C、O[img=~\/QImg\/2013-06-27-14-49-35\/image003.gif]分压增高
D、O[img=~\/QImg\/2013-06-27-14-49-35\/image002.gif]分压降低
E、乳酸增多