【简答题】在CDMA系统中,发送端采用正交的地址码对各用户发送的信号进行码分,在接收端通过 ,利用码型的正交性从多个用户的混合信号中选出特定用户的信号。
【单选题】( )城区大部分低于海平面1~5米,称得上是一座“水下城市”。p330
【单选题】吴先生,即将行胃大部切除术,术前医啊:阿托品0.5mgHs,此项医嘱
【判断题】联合作战是指两个或两个以上军种部队为实现共同的目标在统一计划下联合实施的作战行动。
【简答题】Why did the person ask for two glasses of beer instead of one big glass? [ A] Because he didn't like drink alone. [ B] Because he and his friend drank them together. [ C]Because he and the beer woman ...
【单选题】Why did people often telephone her while they wanted the cinema?
A.
Because the two telephone numbers are the same.
B.
Because they used the same telephone.
C.
Because the two telephone numbers looked almost the same.
【简答题】Why did Peter ask for an explanation about the two items mentioned? Because he ______ the difference between them.
【简答题】Why did the person ask two glasses of beer instead of one big glass?
【简答题】Why did he look so excited? It ________ two week leave. [A] was granted [B] had granted [C] has granted [D] had been granted