一般分离极性大的化合物可用（）
A．吸附色谱
B．离子交换色谱
C．聚酰胺色谱
D．正相分配色谱
E．凝胶色谱
参考答案：D
______ I explained on the phone, your request will be considered at the next meeting. [ ]
A. When
B. After
C. As
D. Since
最有可能的诊断是
A．高渗性非酮症昏迷B．肺部感染C．气胸D．导管性脓毒症E．咽喉部感染
