A. B. C. D.
A.測Na+時,產(chǎn)生“堿差”;測H+時,產(chǎn)生“酸差” B.測OH-時,產(chǎn)生“堿差”;測H+時,產(chǎn)生“酸差” C.測定pH高時,產(chǎn)生“堿差”;測定pH低時,產(chǎn)生“酸差” D.測pOH時,產(chǎn)生“堿差”;測pH時,產(chǎn)生“酸差”