一组包含不同权的字母已经对应好Huffman编码，如果某一个字母对应编码001,下面说法正确的有 A gro

第1题

一组包含不同权的字母已经对应好Huffman编码，如果某一个字母对应编码001,下面说法正确的有 A group of letters with different weights has corresponded with Huffman codes, if a letter's corresponding code is 001, which sentences of the followings are right:

A.以001开头的编码不可能对应其他字母。A code beginning with 001 couldn't correspond with other letters.

B.以000开头的编码不可能对应任何字母。Codes beginning with 000 couldn't correspond with any letter.

C.以01开头和1开头的编码肯定对应某个字母。Codes beginning with 01 or 1 must correspongding with some letters.

D.建好的Huffman树至少包含4个叶结点。The Huffman tree contains at least 4 leaf nodes.

E.编码0和00可能对应于其他字母。Code 0 and 00 could corresponding with other letters.

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第2题

清浊辅音对应的一组字母是（）

A.т-д, ч-г, п-р, ц-щ, ф-в

B.т-д, к-г, п-б, с-з, ф-в

C.т-д, к-г, п-л, ш-ж, ф-в

D.т-д, к-г, п-б, ш-ж, х-в