A.
30%-40% 50% <20%< /div>
C.
50%-60% <15% 30%< /div>
【单选题】某弱碱性药在pH5时,非解离部分为90.9%,该药pKa的接近数值( )。
【单选题】It is not where you come from or what you are, but the ability to do the job matters.
【单选题】____ is the ability to do the job rather than where you come from or what you are that matters.