感光细胞是()
A.视网膜节细胞
B.视网膜双极细胞
C.视网膜视锥和视杆细胞
D.毛细胞
E.上皮细胞
参考答案:C
______ earlier online survey showed that ______ majority of Chinese believe Yuan Longping deserves a Nobel Peace Prize for his contribution to fighting against world hunger.
A.An; the
B.The; a
C.An; /
D.The; the
下列属于基站子系统的是()。
A.移动交换中心(MSC.
B.基站控制器(BSC.
C.鉴权中心(AUC.
D.基站收发信台(BTS)