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【判断题】
端架展示的药品在每层货架上应控制在四种以内。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】假设通信电文使用的字符集为{a,b,e,d,e,f},各字符在电文中出现的频率分别为{34,5,12,23,8,18},利用构造Huffman树对每个字符进行编码,则其中编码长度最长的字符是
A.
a,b
B.
a,d
C.
b,e
D.
e,f
【单选题】I have a big dream — I want to go into space, _______ will take some time to realize, I guess.
A.
which
B.
it
C.
what
D.
where
【单选题】_____ I have a dream to become a singer,I don’t have a gift for music．
A.
As long as
B.
Now that
C.
Even though
D.
In case
【简答题】精馏过程是利用 和 的原理而进行的。
【简答题】I have a dream that we will one day live in a _________where we’ll have a lot of trees and fresh air. A．state B．country C．nation D．space
【单选题】I have a big dream — I want to go into space, _______ will take some time to realize, I guess.
A.
what
B.
it
C.
which
D.
where
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