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【单选题】
一个有n个顶点的图用邻接矩阵A表示,若图为无,顶点 的入度是()A.
B.
C.
D.
,或
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【简答题】何谓留针、留针的方法有哪些？
【单选题】______he works hard, I don't find when he finishes the experiment.
A.
As soon as
B.
As well as
C.
So long as
D.
So far as
【单选题】___hard he works! He works as ___ as Lucy ( )
A.
How / harder
B.
How / hard
C.
what / hard
D.
What a / harder
【单选题】______ he works hard, I don't mind when he will finish the experiment.
A.
As soon as
B.
As well as
C.
So far as
D.
So long as
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