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【单选题】
根据信道的传输参数的特性可分为恒参信道和随参信道,恒参信道的正确定义是()。
A.
信道的参数不随时间变化或随时间缓慢变化
B.
信道的参数不随时间变化
C.
信道的参数随时间变化
D.
信道的参数随时间快速变化
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举一反三
【单选题】三自教育,获得不合格的个人德育积分扣几分?( )
A.
2分
B.
3分
C.
5分
D.
6分
【判断题】江泽民将大庆精神铁人精神的内涵凝练为八个字“爱国、创业、求实、献身”。
A.
正确
B.
错误
【单选题】We were _____ to hear of the death of your mother.
A.
crazy
B.
worried
C.
surprised
D.
sad
【单选题】The peace treaty was signed. Before long they _____ again.
A.
fought
B.
fight
C.
were fighting
D.
have fought
【单选题】江泽民将大庆精神铁人精神的内涵凝练为八个字“爱国、创业、求实、奉献”,( )体现着政治本色、是前提。
A.
爱国
B.
创业
C.
求实
D.
奉献
【单选题】无产阶级军事理论不包括 ( )
A.
战争根源学说
B.
暴力革命学说
C.
兵役制度学说
D.
武装夺取政权的道路
【判断题】The peace treaty was signed in 1776, in which the independence, freedom and sovereignty of the 13 states were acknowledged.()
A.
正确
B.
错误
【单选题】-- Mr Jordan, we want to hear your opinion about the current NBA games. -- OK, I ____ to that.
A.
came
B.
have come
C.
am coming
D.
come
【简答题】在元组关系演算中,投影操作需要在谓词公式中满足条件的元组前加( )量词符号。
【单选题】Since we can't hear you at the back of the hall, you'll have to ______ your voice.
A.
lift
B.
increase
C.
speak up
D.
raise
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