苯巴比妥的乙醇溶液澄清度检查物质是().
A.苯丙二酰脲
B.酸性杂质
C.2-苯基丁酰胺
D.对氨基酚
E.苯基丁酰脲
参考答案:A
—Would you like me to carry this box for you?
—_________.I can manage it myself.
A.No, thanks
B.It’s a pleasure
C.That would be nice
D.Yes, please
禁食期间机体首先动用的能源是 ( )
A.糖原B.骨骼蛋白质C.血浆蛋白质D.脂肪E.肝内蛋白质