下述哪些与盐酸吗啡不符
A.分子中有五个手性碳原子,具旋光性 B.光照下能被空气氧化变质C.其中性水溶液较稳定 D.和甲醛硫酸溶液显紫堇色E.为中枢镇痛药
参考答案:C
-Are you _____ the book The Christmas Sweater?
-Yes, it's great.[ ]
A. talking about
B. talking to
C. talking with
D. talking for
柴油打夯机填涂施工时,分层厚度为( ),每层压实遍数为3~4。
A.<200 mB.200~250mmC.250~350mmD.250~300mm