下行闭环功控的步长是对少?功控指令为多少?
参考答案:
功控步长是1,2,3DB,子帧长度为5ms,每个子帧每用户有一个功控指令,因此功控指令为200HZ.
关于HLA-Ⅱ类分子的描述,错误的是
A.主要存在于B细胞,抗原递呈细胞和活化的T细胞表面
B.对Th细胞的识别起限制作用
C.由人第六对染色体短臂上HLA复合体基田编码
D.由α和β两条糖肽链借非共价键连接组成
E.能与辅助受体CD8分子结合
The famous actress became________, and couldn't say a word when asked about her father,
who passed away only last month. [ ]
A. choked
B. frightened
C. swelled
D. squeezed