乳剂放置后,有时出现乳滴逐渐聚集在上层或下层的现象称为()
A.破裂
B.转相
C.分层
D.絮凝
E.乳剂败坏
参考答案:C
It takes a long time to ____ a good name,but this name is quickly lost by just one piece of bad behavior.
A.pick up
B.think up
C.build up
D.make up
与Gb接口有关的概念为()。
A.NPE
B.NSE
C.NSVC
D.NTP