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【单选题】
调制时,调频波的最大频偏Δf m 正比于 ( )A.
． U Ω
B.
． u Ω (t)
C.
． Ω
D.
． U Ω / Ω
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反馈参考答案：
举一反三
【单选题】Speaker A: Im worried about those classes I missed when I was sick. Speaker B:______
A.
I am glad that you have got well.
B.
Don't worry. Everything will be all right.
C.
I'll try to bring you up to date on what we've done.
D.
Maybe you should explain to our teacher why you were absent from class last week.
【单选题】15 When did the accident happen?
A.
At about 8：00 am
B.
At about 9：00 am
C.
At aboutl0：00 am
【单选题】(12)引入二叉线索树的目的是( )。
A.
加快查找结点的前驱或后继的速度
B.
为了能方便的找到双亲
C.
为了能在二叉树中方便的进行插入与删除
D.
使二叉树的遍历结果唯一
【单选题】When did the accident happen?
A.
at about 8:00 am
B.
at about 9:00 am
C.
at about 10:00 am
【单选题】Thomas Edison became in science when he was a child.
A.
interest
B.
interests
C.
interested
D.
interesting
【单选题】when did the accident happen ?
A.
at about 8:00 am
B.
at about 9:00am
C.
at about 10:00am
【单选题】引入二叉线索树的目的是 ( )
A.
加快查找结点的前驱或后继的速度
B.
为了能在二叉树中方便地进行插入与删除
C.
为了能方便地找到双亲
D.
使二叉树的遍历结果唯一
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