能测定苷键构型的方法是
A.碱水解B.UVC.H-NMRD.IRE.MS
参考答案:C
解析:苷键构型的确定方法有酶水解法、Klyne经验公式进行计算、利用NMR确定。
—Excuse me, is Mr Green in the office?
—No. He Singapore for a meeting. He will be back in a few days.
A.have gone to
B.has gone to
C.have been to
D.has been to
下列选项中属于卫生行政诉讼特殊原则的有()
A.一审终审原则
B.不适用调解和反诉原则
C.被告负主要举证责任原则
D.具体行政行为合法性审查原则