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【单选题】
设有无G(V,E)和G’(V’,E’),如果G'是G的生成树,则下列不正确的是() 1.G‘为G的连通分量 2.G‘为G的无环子图 3.G’为G的极小连通子图且V’=V
A.
1,2
B.
只有3
C.
2,3
D.
只有1
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A.
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B.
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A.
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B.
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A.
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B.
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A.
which
B.
where
C.
while
D.
when
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