PCI“不冲突(collision-free)”,即任何两个相邻小区都不能使用同一个PCI,同一个eNB中不同小区也不能使用同一个PCI。()
参考答案:错
We hadn't expected _____ so many people present at the meeting. [ ]
A. there being
B. there to being
C. there is
D. there to be
片剂制备过程中,润滑剂应于何时加入()
A.制粒时
B.颗粒整粒时
C.颗粒干燥时
D.药物粉碎时
E.制软材时