The train bombings in Madrid may have_____.
A. caused the Spanish Popular party to lose its power to the Socialists
B. led to the Dutch citizens to urge the Dutch government to withdraw troops out of Iraq
C. shaken people's confidence in Bush
D. been plotted by A1 Oaeda
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可转换公司债券的转股期限越长，转股权价值就越大，可转换公司债券的价值越高。()
A. 正确
B. 错误
在数据压缩编码的应用中，哈夫曼(Huffman)算法可以用来构造具有(18)的二叉树，这是一种采用了(19)的算法。
A. 前缀码
B. 最优前缀码
C. 后缀码
D. 最优后缀码
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