LTE协议中,定义了几种PDSCH的传输模式()
A.8
B.6
C.7
D.5
参考答案:C
The boy made the same mistakes __________,which,of course,made his parents very angry.[ ]
A.over and over again
B.more or less
C.sooner or later
D.here and there
维生素B2又名核黄素,它在体内氧化还原过程中起的作用是
A.传递氮的作用B.传递硫的作用C.传递水的作用D.传递氢的作用E.传递磷的作用