[单选题]
单纯代谢性酸中毒时可出现
A.pH↓,PCO
↑,cHCO
↑↑
B.pH↑,PCO
↑,cHCO
↓↓
C.pH↓,PCO
↓,cHCO
↓↓
D.pH↓,PCO
↑,cHCO
↓↓
E.pH↑,PCO
↓,cHCO
↑↑
参考答案与解析: