简述TD-SCDMA系统中训练序列的作用。
参考答案:
用于进行信道估计,测量,如上行同步的保持及功率测量等。
阅读下面短文。根据以下提示:1)汉语提示,2)首字母提示,3)语境提示,在每个空格内填人一个适当的英语单词,并将该词完整地写在相对应的横线上。所填单词要求意义准确,拼写正确。
As children,loving our parents is an important part of life. It is our parents who create us,小题1: (抚养)us,make us who we ale and keep a roof over our heads in all kinds of weather.Here are some ways to love our parents
Firstly, tell them we love them every day.A gentle“I love you”will小题2:w a coldest heart.Parents brought us into this world 小题3: them,we might still wander at an unknown corner of an unknown world .Then,show小题4: (尊敬)to them and don’t get angry easily because anger helps小题5: us nor our parents.Instead,keep小题6: c and sometimes share our feelings with them.Besides,obey their requests,小题7: will make our attitudes better.
What’s more,understand that parents should be小题8:f when they make mistakes. We should
also keep company with them as much as小题9:p . Learn from them by listening to their stories as parents are the小题10: of our growth and even our teachers in one way or another.
男性,55岁,患慢性肾炎10余年。经中西医结合治疗病情稳定,但近1年来逐渐加重,食欲下降,贫血,化验血肌酐已进入肾衰竭期,这时血肌酐的水平是
A.<278μmol/L
B.178~278μmol/L
C.278~450μmol/L
D.450~707μmol/L
E.>707μmol/L