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【简答题】
接入网(access network,AN)的定义:由( )到业务节点接口(service network interface ,SNI)之间的一系列传送实体所组成的全部设施,即所谓接入网是指( )到( )之间的所有设备,接入网不解释信令。
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举一反三
【简答题】A．It's difficult to find birds for recording. B．It's difficult to find quiet areas for recording. C．It's difficult to find animals for recording. D．It's difficult to find mammals for recording.
【单选题】What does the woman want to do?
A.
To find out the best way to New York.
B.
To find out information on traveling by bus.
C.
To find out the cheapest way to get to New York.
【单选题】Why did John decide to go to the village?
A.
To find his folk to help him flee.
B.
To find a peaceful place for rest.
C.
To cure his wound.
D.
To find food and drink.
【单选题】体育锻炼可使肌肉力量增大、伸展性提高,从而使( )
A.
关节灵活性（运动幅度）增大，稳固性减小
B.
关节灵活性与稳固性增加
C.
关节稳固性增大、灵活性减小
D.
关节灵活性与稳固性减小
【简答题】当长边与短边长度之比不大于2.0时，应按双向板计算。
【单选题】(02年)设 和 是任意两个相互独立的连续型随机变量,它们的概率密度分别为 ,分布函数分别为 ,则
A.
必为某一随机变量的概率密度
B.
必为某一随机变量的概率密度
C.
必为某一随机变量的分布函数
D.
必为某一随机变量的分布函数
【简答题】A．They wanted to find out }tow to become wealthy. B．They wanted to find out how to live longer. C．They wanted to know what alcohol he drank. D．They wanted to know where to be given an injection.
【简答题】A．To find out exactly what happens. B．To save fuel to fly longer. C．To find out where the big stone is. D．To fly even more slowly.
相关题目：
【单选题】体育锻炼可使肌肉力量增大、伸展性提高,从而使( )
A.
关节灵活性（运动幅度）增大，稳固性减小
B.
关节灵活性与稳固性增加
C.
关节稳固性增大、灵活性减小
D.
关节灵活性与稳固性减小
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