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【简答题】
OSI 模型中将服务质量( QoS )分为三类, ____ 类服务质量最高,其传输层采用的协议级别比较 __ __ 。
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反馈参考答案：
举一反三
【简答题】根据下面的时间，画出时针和分针的位置．
【单选题】听力原文：W: At what age do children start school in your country? M: At five. How about in your country? W: At six. Do boys and girls go to school together? M: Yes, they do. And I think it's a good idea. ...
A.
At seven.
B.
At six.
C.
At five.
【简答题】下面的图形旋转一周形成什么，请画出。
【简答题】根据下面的程序，画出相应的程序框图。
【单选题】听力原文：W: What's the time by your watch? M: It's ten forty, but my watch is five minutes slow. Q: What time should it be? (16)
A.
10:40.
B.
10:10
C.
10:45.
D.
10:35
【单选题】听力原文：W: At what age do children start school in your country? M: At five. How about in your country? W: At six. Do boys and girls go to school together? M: Yes, they do. And I think it's a good idea. ...
A.
At seven.
B.
At six.
C.
At five.
【简答题】It was in Beihai Park ______ they made a date for the first time ______ the old couple told us their love story. A) where; that B) that; that C) where; when ...
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