题目

 _________from the operation, the patient was advised to stay in hospital for another two weeks. A. Having not fully recovered            B. Being not fully recovered C. Not having fully recovered            D. Not fully recovering 答案：C下列溶液中有关微粒的物质的量浓度关系正确的是（　　）A．NaHSO3和NaHCO3的中性混合溶液中（S和C均用R表示）：c（Na+）=c（HRO3-）+c（RO32-）B．常温下将醋酸钠、盐酸两溶液混合后，溶液呈中性，则混合后溶液中：C（Na+）＜C（Cl-）＜C（CH3COOH）C．常温下物质的量浓度相等的①（NH）2CO3、②（NH4）2SO4、③（NH4）2Fe（SO4）2三种溶液中c（NH4+）：①＜③＜②D．等体积等物质的量浓度的NaClO（aq）与NaCl（aq）中离子总数多少：N前＜N后