A . 10:1
B . 15:1
C . 20:1
D . 25:1
E . 30:1
[单选题]正常人血中HCO3-与H2CO3之比为()A . 15:1B . 10:1C . 20:1D . 25:1E . 30:1
[单选题]正常人血中HCO3,与H2CO3之比为()。A . 10:1B . 15:1C . 20:1D . 25:1E . 30:1
[单选题]正常人血中HCO-3与H2CO3之比为()A . 15:1B . 10:1C . 20:1D . 25:1E . 30:1
[单选题]正常人血中HCO3-与H2CO3之比为 ( )A.10:1B.15:1C.20:1D.25:1E.30:1
[单选题]正常人血中H2CO3与HCO3-的比值为( )。A.20:1B.1:20C.25:1D.1:25E.1:30
[单选题]正常人血中H2CO3与HCO3-的比值为( )。A.20:1B.1:20C.25:1D.1:25E.1:30
[单选题]正常人血中H2CO3与HCO3-的比值为( )。A.20:1B.1:20C.25:1D.1:25E.1:30
[单选题]正常人血中H2CO3与HCO3-的比值为( )。A.20:1B.1:20C.25:1D.1:25E.1:30
[单选题]正常人血中H2CO3与HCO3-的比值为( )。A.20:1B.1:20C.25:1D.1:25E.1:30
[单选题]正常人血中H2CO3与HCO3-的比值为( )。A.20:1B.1:20C.25:1D.1:25E.1:30