血浆缓冲系统中,缓冲能力最强的是

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]
B、KHb\/Hb
C、血浆蛋白-Na\/血浆蛋白
D、Na[img=~\/QImg\/2013-06-26-17-11-54\/image002.gif]HPO[img=~\/QImg\/2013-06-26-17-11-54\/image022.gif]\/NaH[img=~\/QImg\/2013-06-26-17-11-54\/image002.gif]PO[img=~\/QImg\/2013-06-26-17-11-54\/image022.gif]
E、KHCO[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]