题目内容

无向图的邻接矩阵一定________

A. 有很多元素的值为0
B. 沿主对角线对称
C. 没有负值
D. 主对角线都是1

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无权有向图的邻接矩阵第i行元素之和为5，则________

A. 该图一定有5个顶点
B. 该图一定有5条边
C. 该顶点的入度为5
D. 该顶点的出度为5

带权无向图邻接表的单链表每个元素要存储________

A. 对应的顶点度
B. 对应边的权
C. 相关联的顶点度
D. 对应边的方向

把邻接表转换成逆邻接表时________

A. 有向图就转换成对应的无向图
B. 每个顶点后面的单链表表长不变
C. 所有单链表的表长之和不变
D. 把所有的边改变方向

Listen to the following English sentences and interpret them into chinese, paying attention to collocations.原文：（1）WTO accession is not only in the interests of China, but also in the interests of all WTO Members and conducive to the development of the multilateral trading system. （2）A balanced package approach be taken to ensure that the results of the negotiations reflect an overall balance of the interests of various parties.