代谢性酸中毒时( )

A、NaHCO[img=~\/QImg\/2013-06-26-17-11-54\/image021.gif]\/H[img=~\/QImg\/2013-06-26-17-11-54\/image002.gif]CO[img=~\/QImg\/2013-06-26-17-11-54\/image021.gif]<20\/1
B、原发性H[img=~\/QImg\/2013-06-26-17-11-54\/image002.gif]CO[img=~\/QImg\/2013-06-26-17-11-54\/image003.gif]↑
C、NaHCO[img=~\/QImg\/2013-06-26-17-11-54\/image021.gif]\/H[img=~\/QImg\/2013-06-26-17-11-54\/image002.gif]CO[img=~\/QImg\/2013-06-26-17-11-54\/image021.gif]<20\/1
D、原发性H[img=~\/QImg\/2013-06-26-17-11-54\/image002.gif]CO[img=~\/QImg\/2013-06-26-17-11-54\/image021.gif]↓
E、NaHCO[img=~\/QImg\/2013-06-26-17-11-54\/image021.gif]\/H[img=~\/QImg\/2013-06-26-17-11-54\/image002.gif]Co[img=~\/QImg\/2013-06-26-17-11-54\/image021.gif]>20\/1